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Document:	Micro/PDP-11 System Technical Manual
Order Number:	EK-0LCP5-TM
Revision:	2
Pages:	114
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MICRO/
PDP-11
SYSTEM

103 9 0 0 0 3 800600000000000000000000000000000000C000000000000000000000008000800000000000000000000800080000000000000

TECHNICAL
MANUAL

EK-OLCP5-TM-002

MICRO/
PDP-11

TECHNICAL
MANUAL

Prepared by Educational Services
of
Digital Equipment Corporation

1st Edition, May 1983
2nd Edition, January 1984

The information in this document is subject to change without notice. Digital
Equipment Corporation assumes no responsibility for any errors that may
appear in this manual.

Digital Equipment Corporation assumes no responsibility for the use or reliabil-

ity of its software on equipment that is not supplied by Digital.

FCC Notice: The MICRO/PDP-11 system generates, uses, and may emit radio
frequency energy. The equipment has been type tested and found to comply
with the limits for a Class A computing device pursuant to Subpart J of Part 15
of FCC Rules, which are designed to provide reasonable protection against
such radio frequency interference when operated in a commercial environment. Operation of this equipment in a residential area may cause interference
in which case the user at his own axpense may be required to take measures

to correct the interference.

The manuscript for this book was created using a DIGITAL Word Processing
System and, via a translation program, was automatically typeset on DIGITAL's
DECset Integrated Publishing System. Book production was done by Educational Services Development and Publishing in Mariboro and Bedford, MA.
UNIX is a trademark of Bell Laboratories.

The following are trademarks of Digital Equipment Corporation.

Eflflflafl

Letterprinter 100

DECUS
DECwriter
DIBOL
LA

PDP
P/OS
Professional
QBus

CTS-300
DEC
DECmate
DECsystem-10
DECSYSTEM-20

Letterwriter 100
LSI-11
MASSBUS
MICRO/PDP-11
MicroPower/Pascal

Rainbow

RSTS
RSX
TOPS-10
TOPS-20
UNIBUS

VAX
VMS
vT
Work Processor

CONTENTS
Page

PREFACE

ped

AN
B W —

W L LW W W W N —

CHAPTER 1

INTRODUCTION AND SYSTEM DESCRIPTION

INTRODUCGTION ..ottt
e st e s e s sse e eess e e e seens 1-1
SYSTEM DESCRIPTION ...ttt
eeeeeaeseessseneessseeseesesssensens 1-1
BASIC SYSTEM OPERATION........oootiitiieieeeteeeeeeeee
eeseeeee e s eees s e s s an 1-3
Using the Control Panel..........ccoooviiiiiiiiiiiicicieceecceeeee et 1-3
Handling and Storing DiSKettes ...........cccovivriiviiiiiiiiieierereeese
e eee e.. 1-6
Loading and Unloading DiSKEttes.............cvevivuieeiiiineiiiiereeeeeeeeeeeeeeeeeenenen, 1-8
Write Protection Of DISKEeS .......covveevieeuiiiiiiiiieieetteeeeeeeeeee
et eervesee s e 1-14
Bootstrap Commands and Dialog ...........cc..ocueviiviieiiniiieeeeeeeeeeeeeeeeeees 1-14
Using XXDP+ Diagnostic Software to Copy and

CHAPTER 2

SYSTEM COMPONENTS

2.1

2,64

INTRODUCGTION ...ttt
ettt e e e et eeeesenesenesenesne e 2-1
KDF11-BP CENTRAL PROCESSING UNIT (CPU) ASSEMBLY ......ccooo........ 2-1
MSV11-PK MEMORY MODULE .........coioiiiiieiiieeeeeeetecteeeee
e s see s 2-8
DZV11-CP ASYNCHRONOUS MULTIPLEXER..........cccooooietiveeeeeeeeeeeerennn 2-11
RD51/RX50 CONTROLLER AND DRIVE SUBSYSTEM .....ccooooovivviveeenannn. 2-14
RQDX1 Controller ModUIE ..........ccuoeeviiviiiiiiiiieieeeeeeeecteeeeeeee
e e e e 2-14
RDS1 Fixed Disk DIIVE ......ccuviiiieiiieiicic
ettt
evee e 2-16
RXS50 DiSKette DIIVE ....cocvvieiieeiieiiececee
ettt
eevee s e 2-17
BA23-A MOUNTING BOX ......ccooiiiieeeeeeeeceeeeeeeeet ettt 2-18
Backplane ASSEMDIY........cccuieiiiiiiieiieeeeeeceee
et 2-18
H7864 POWET SUPPILY ..ottt 2-21
Control Panel (54-15610)......cc.oeiouiiiiiiiieeie
ettt eeeee e e eeeaeeseneeeeee e 2-22
Patch and Filter Panel Assembly ......c..cccoooiveiiiiiiiiiiiicceeeeece
e 2-23

CHAPTER 3

PROGRAMMING

W wWww

Create Backup DISKELIES ........cueeeuiiviiiiceiiieeteee
ettt e e e eeee e eeaesene e 1-15

INTRODUCGTION ...ttt
ettt e e e st e e e eeteeseteeeneesnnas 3-1
HARDWARE-INITIATED DIAGNOSTICS ........ooooiiiieieeeee et 3-1
DIAGNOSTIC SOFTWARE ...ttt 3-3
USer Test DISKELE.....c..ooviiiiiieiieiieeeeeece et 3-4
Field Service Test DISKEtes......c.ccoveiivieiuiiiiiiieiciieeieeeeeeeeeeeee et 3-5
OPERATING SYSTEM SOFTWARE ..., 3-5
Micro/RSX, RSX-11M, and RSX-11M-PLUS ..., 3-5
MICTO/RSTS ...ttt
ettt
sne et eeee e aeeeeeaeas 3-5
R et
e e st e et eseaeesnneeseneeenane 3-5
CTS-300 ettt
e et e sreeeeaesteseeeeaeeesreeannens 3-6
MICTOPOWET /PaSCAL........oooiiiiiiiiiiieeee
e
s e eae e 3-6
VIM-T1
e ettt s et e s e e e tt e et e s eae e e neenneas 3-6
DSME-T1 ettt
e oot s et e e st e e s 3-6

2.2
2.3
24
2.5
2.5.1
2.5.2

253
2.6
2.6.1
2.6.2
2.6.3

3.1

3.2

34.1

34.2
343
343.1
3.43.2

3.44

345

iii

CONTENTS (Cont)
Page

CHAPTER 4

TERMINAL OPTIONS

4.1

INTRODUCGTION ...ttt 4-1
VT100 SERIES VIDEO TERMINALS ..., 4-1

4.4

LA120-DA/DECWrIter IIL........ccooooriiiieee
e 4-2
LA100 LETTERWRITER 100........ccooooiiiiiiieeceeceeceeceecee
e 4-4

CHAPTER §

SYSTEM REQUIREMENTS AND MAINTENANCE

L
L
L b i
VEWWWN
~—

4.2

INTRODUCTION ..ottt
reer e e e v et sresrn et et eaesaasene e 5-1
ENVIRONMENT ...ttt
ettt
ess et eese st b e saresesenes e 5-1
SYSTEM TESTS AND ERROR DETECTION.........ccocoveviiieiiceeeece
e 5-2
Bootstrap/Diagnostic ROM Programs............ccocoeviiiiiiiiniiiiinreceeeeeceeeeeeeen 5-2
User Test DISKEtte.......coiciiiieiieiieiece ettt et 5-7
ON-LINE DEBUGGING TECHNIQUE (ODT).....ccceovvveiiriitieeiieiceeeeteeeeeeeeeens 5-8
TROUBLESHOOTING WITH THE DEC/X11 RUN-TIME
EXERCISER ...ttt
ere et ess s stssstsssesssesssessesesinssaesa 5-9
ErrOr MESSAEES....ccouiermieeriiiresiicir ettt
ettt
a e e, 5-10
System Error MesSage ........oocovuiiviiieeiieiiiviecceeree
ettt ereereeaea 5-10
Data Error Message..........coooeviiiiiiiieieinieeceeceecteee
ettt 5-10
Status Error Message..........cccoeviiieeiiiiciiiec
e 5-11
Selecting and Deselecting Program Modules..............c.cocoeevivievivinicninnnnn.. 5-11
Expanding the Run-Time EXerciser...........cccccoevivvvviericiinricieicieeeeeeeeeee 5-12
TROUBLESHOOTING WITH THE XXDP+ DIAGNOSTIC
PROGRAMS ...ttt
ettt
sr e et sae e b e s e sen e e aesaeenaes 5-12
EITOr MESSAZES........ociiiiiriiiiinieeiieee
e
enecrn e et ettt eaa
5-12
Restarting Programs...........ccoccevviieieniieinieciicie et 5-12
Modifying a Diagnostic Program..... ... 5-13
TROUBLESHOOTING PROCEDURES..........ccccoovitiiiiieic
et 5-13
CORRECTIVE MAINTENANCE .........oooieieeeeeeeeeeeeeeeeeeeeeeen
. 5-16
KDF11-BP Central Processing Unit Assembly
Removal and Replacement Procedure.........occcooeviiuiiiiiiiieeeeeeeeeeeeeee
e, 5-18
MSV11-PK (M8067) Memory Module
Removal and Replacement Procedure...........c..ccooovveeviiviiiiniiiiicceeeee. 5-19
DZV11-CP Asynchronous Multiplexer
Removal and Replacement Procedure............ccoeevveeviinvivcrieniiiiceeeeeeee. 5-20
RQDX1 (M8639) Module
Removal and Replacement Procedure.............cccoeveveiieviniiniiciiceeceeeeeeee, 5-21
RD51-A Fixed Disk Drive
Removal and Replacement Procedure..........c..covveviiiviiniiiiiiiicieereeeen, 5-21

e
W N

I DD ret pmd ot

L
L L
LWL
i

DD ==

4.3

5.6.1
5.6.2
5.6.3
5.7

5.8
5.8.1
5.8.2
583

5.84
5.85
5.8.5.1

5.8.7.1

RDS51-A Fixed Disk Drive Read/Write
Printed Circuit Board
Removal and Replacement Procedure ...........cocovevvvvveveevinniiiiieecnn, 5-25
RD51-A Fixed Disk Drive Formatting Procedure............c.cccevvvvnennees 5-28
RX50-AA Diskette Drive
Removal and Replacement Procedure..............cooeevveviniiviiiniiciiniiee
e, 5-29
H7864 Power Supply
Removal and Replacement Procedure..........c.ccooveeveiiviiviiiiiieicieeree
e, 5-32
System Unit Front Fan
Removal and Replacement Procedure .............cocceovvvvvviciivccnecnveeeeneen. 5-34

CONTENTS (Cont)
Page
5.8.7.2

5.8.8
5.89

System Unit Rear Fan
Removal and Replacement Procedure ............ccooveevvvviveineeeeeereeennnnn 5-35
Backplane Assembly
Removal and Replacement Procedure..............o.oeveeeueeeeeeeeeeeeeeereeseeereenennns 5-36
Control Panel (54-15610)
Removal and Replacement Procedure..............ccooeeeeeeeeereeeeeeeeseeeeeereeee, 5-37

CHAPTER 6

SYSTEM OPTIONS AND RULES FOR EXPANSION

6.1

INTRODUCGTION ...t
ee e tt
eee e e eseee e, 6-1
CENTRAL PROCESSING UNIT OPTIONS ..., 6-1

6.2
6.2.1
6.2.2

KEF11-AA Floating-Point Option.............cccoevvmeeeeeeeeeeeeeeeeeeeee
oo,
s 6-1

6.5

FPF11 Floating-Point Option Module ..............cocooeeveniereeeeeeeeeeeeeeeeeeeerere, 6-1
KEF11-BB Commercial Instruction Set Option...........cceeoeeeveeeoveeerereererienan, 6-1
MEMORY EXPANSION ..ottt
ee e e ee e
eee e, 6-2
COMMUNICATIONS HARDWARE OPTIONS ..ottt 6-5
MASS STORAGE OPTIONS........ooooiieeeeeeeeeeeeeeeeee
e e e,
eeee 6-5

APPENDIX A

BACKPLANE PIN ASSIGNMENTS

APPENDIX B

ON-LINE DEBUGGING TECHNIQUE (ODT) COMMANDS

APPENDIX C

GLOSSARY

6.2.3
6.3
6.4

FIGURES

NNNNNNNI'\)NN'—"—"—'—-—-'—-——‘-—'—a-—-

-—-\ooo\xo\uax:-wu-'a\ooo\ro\m.pwm-—

Figure No.

Title

Page

MICRO/PDP-11 System PacKages .........cceeeeveieriiieeiirienrreeeeeee
et ecereeeneeeree
1-2
MICRO/PDP-11 System Control Panel.............cc.coooeiiviiiiiiiiiiiiiecceeee 1-3
RX50 Diskette Drive Active Drive Light Locations .........cccccoecevveiiiiiiciiiinieecnienne, 1-7
Opening Drive Door 1 of the RX50 Diskette Drive ........cccccovvvviveiieeeiiiiivceiecnen, 1-8
Opening Drive Door 2 of the RX50 Diskette Drive ........c.ccoevviviviiiiiiiciiieennen, 1-9
Inserting a Diskette into Drive 1.......coooiiiiiiiiiiiieececeee
e 1-10
Inserting a Diskette into DIive 2.........cocovviiiiiiieiiiece
e 1-11
Closing Drive DOOT ©....oooeiiieeeee
ettt 1-12
ClosINg DIive DOOT 2.....oneeiiieieeecee ettt
ettt et e anes 1-13
Write-Protect Tab AppliCation.........cccueiviuiieeciiieeieccc
et e 1-14
KDF11-BE Module Jumper, Switch, and Diagnostic LED Locations ...................... 2-2
CPU Patch and Filter Panel .............c.ooiiiiiiieeceeee e 2-7
MSV11-PK Memory Module Factory Jumper Configuration ...............ccceeevveennenne. 2-9
DZV11-A Module Jumper and Switch Locations .............ccceevvvveviveiiiniiieeiineenene, 2-11
DZV11 Patch and Filter Panel ............c.ccoiiiiiiniicee
e, 2-13
RQDX1 Controller Module Jumper and LED Locations ............ccccoveovveviviiennenn. 2-14
RDS1 Fixed Disk DIIVE.......cooviiiiiiiiiieceeeeeeteeeeee
et
et 2-16
RX50 DiSKEtte DIIVE....ccocvviiiiiiinirieiieriieeectte
ettt e e ve e eve e saneeeane 2-17
BA23-A Mounting BoX ......coociiiiiiiiiiiee
e 2-18
BaCKPIANE.... ..ot
e et e e e eaba e enens 2-19

FIGURES (Cont)

]

—
D

1O\ W

N —

O 00

]

(IIKIILI’IK.II(J!MLI'
;—-[\)N['\)-—-—nu—n

[

Title

Page

Backplane Grant Continuity Chaiming .........cocooiiiiiiiiii 2-19
Signal Distribution Printed Circuit Board Layout........ccocoooiiiiiioiiiin 2-20
H7864 POWET SUPPLY....oiverereeuireriiiiiieietet sttt 2-21
Control Panel Assembly .........occooeriiiiiiiii 2-22
Patch and Filter Panel Assembly .......cooceeviiiiiiiiiiiiiiic 2-23
VT1O0 TEITNINAL eoeeeeeeeeeeeeeeereeeeeeeiiiisrrrreaessaserreresesisssareeaaessassssteeeeeseesiarrassaesanarneassaas 4-1
VT100 Series of Terminals, Comparison Chart ...........ccooooinine 4-2
iieceeeeeee 4-3
rre s
iriei
ettt
LA120-DA DECWEItEr IIL....ooeiiiii
. 4-3
.
.
Chart
on
Comparis
,
Hardcopy Terminals
sseissaecssenses 4-4
esssesannasss
sesesssrreste
ereetiiiirrre
rereeerieeiii
..cooiiiiiiie
..
100
ter
LA100 LetterWr
Diagnostic LED LOCALIONS........cocveuriemrininrcseiemnsiiiisinississ sttt 5-5
Troubleshooting FIOWCRArt ...........coiiiiiinioinii 5-14
MICRO/PDP-11 System FRUs, Expanded View.........ccoooiinniiciiinn. 5-16
s 5-22
tsissstsis
tstssat
stt
Front TOP COVET ACCESS.......ouiuruiiereirisinntsts
RD51-A Fixed Disk Drive Release Tab ... 5-22
RD51-A Fixed Disk Drive Signal Cabling Removal ..o 5-23
RD51-A Fixed Disk Drive Power Cable Removal ... 5-23
RD51-A Fixed Disk Drive Removal.......ccoccevieiiiiiiiiiee 5-24
RD51-A Fixed Disk Drive Skid Plate Removal.........cccooiiiiiiiiinnni. 5-25
RD51-A Fixed Disk Drive Read/Write

Printed Circuit Board Screw Removal........ccoooiiiiiiie 5-26
RD51-A Fixed Disk Drive Connector P5 Removal ... 5-26
RD51-A Fixed Disk Drive Connectors P8, P7, and P6 Removal............c.cccoeene 5-27
RDS1-A Fixed Disk Drive Connector P4 Removal ... 5-27
RD51-A Fixed Disk Drive Read/Write

k.llklllll '

—\0
00 ~J O\ Lh

RS G
L(:Yuk.nt(nt.;- P H W=
e
S W
—

bW
N -

Figure No.

s 5-28
Printed Circuit Board Removal...........oovivieiiiiiiiiiii
stisss 001ttt 5-30
Front TOp COoVEr ACCESS..cuuiiimnunmnrsiatniersrsnetststseontn
RX50-AA Diskette Drive Signal and Power Cable Removal ................................. 5-30
RX50-AA Diskette Drive Release Tab........coooiriiiiins 5-31
RXS50-AA Diskette Drive Removal ..o 5-31
sen 5-32
H7864 Power Supply (Rear VIEW).......coeveinmineininiiiiiisie
5-33
iiiii
s
H7864 Power Supply (Front VIEW)........cceoenneiniiniiii
i
H7864 Power Supply (Side VIEW) ...cooviiiiiiiiiiiii 5-33
e 5-35
erssa ssrere
eeeiirees
sttt
Fan Power Cable CONNECION ........coovveeeiiieeeeriiniieiiirer
6-5
iinii
e
Communications Hardware OPtions..........cocvovirniimminimn
A-1
in:
Quad Module Contact Finger Identification.........ccoiimiiiiinniiii
TABLES

Table No.

Title

Page

MICRO/PDP-11 System Model Comparison Chart..........cccooniiiiiiiiiinn 1-1
MICRO/PDP-11 System Control Panel Switches.............cccooiniiiiiiinn, 1-4
MICRO/PDP-11 System Control Panel Indicator LEDS .....cccoooviiinnnnniiiinnn. 1-5
KDF11-BE Module Factory Jumper Configuration ............coceeevininnininninennenes 2-3
KDF11-BE Module Bootstrap/Diagnostic Switch Configuration -

SWItCh ST(EL02)....uiuieieeeieieeeeeriireiretsse ettt 2-4
KDF11-BE Module SLU Baud Rate Factory Switch Configuration -

SWILCh S2(EL14) e iuiieterietee ettt bbb
vi

2-6

TABLES (Cont)

P O\O\q\O\O\O\ MMMMMM'}ANNNNN
s
b o~
o0 adb
o
- Shbhbi—~4 A

Table No.

Title

Page

CPU Patch and Filter Panel Rotary Switch Settings..........ccccovvviinniiiiiiiniinin. 2-7
MSV11-PK Memory Module Factory Jumper Configuration ...........c.cocoeveeinninn, 2-10
DZV11-A Module Factory Jumper Configuration..........cccccoooviriniiiniiinnniiinnnnnnnn 2-12
DZV11-A Module Factory Switch Settings.........cccccceevvverniiiiniiiniiiiiie 2-12
RQDX1 Controller Module Factory Jumper Configuration ..........ccccooveiniinennn 2-15
MICRO/PDP-11 System Environmental Specifications.............cccocenirniniinnnnnne 5-1
MICRO/PDP-11 System Power Requirements..........c.coccoviiiiniiniinniieninnienninenenn 5-2
Boot/Diagnostic ROM Error TYPES.......cccovviieriniiiiiiineneneeteeis e 5-3
Diagnostic LED Error Displays.........ccccoiviiiiiiniiiiniiineinsceneieeeecs 5-6
XXDP+ Diagnostic Programs.........cccccevuerrierriiniiniiniininiiinie ettt 5-11
Recommended Repair Procedures for MICRO/PDP-11 System FRUs ................ 5-17
Read/Write Printed Circuit Board Jumper Configuration..........c.cccocoeieniniinnnins 5-25
MSV11-P Memory Module VErsions.........ccccoeeceviiiiiiirieiiiinieneeneenie e 6-2
M8067-KA Memory Module CSR Address Selection ...........ccooviiiinieniiniencnnnne 6-2
M8067-KA Memory Module Starting Address Configurations (FAR).................... 6-3
M8067-KA Starting Address Configurations (PSA) .......cccoovviinniniininines 6-3
Additional MICRO/PDP-11 System Memory Options...........ccccoevrvvviriiiiniienennnnenn. 6-4
Mass StOrage OPLIONS .......ceveriirierierieeiecnieiie ettt 6-5
KDF11-BE (M8189) Module Backplane Pin Assignments

KDF11-BE (M8189) Module Backplane Pin Assignments

(ROWS € aNd D).t A-2
MSV11-PK (M8067) Module Backplane Pin Assignments

e A-3

(ROWS A and B)....oooiiiiiiieieeeeeececeti
A-4
A-5

e A-2

(ROWS A and B)....ooviiiiiiiceeecrc

MSV11-PK (M8067) Module Backplane Pin Assignments

(ROWS € and D) ..ooovviiieieeeeeee ettt A-4
DZV11-A (M7957) Module Backplane Pin Assignments

(ROWS A and B).....oooviiiiiiieeceeeectcetec

e A-4

DZV11-A (M7957) Module Backplane Pin Assignments

(ROWS € and D).ttt
RQDX1 (M8639) Module Backplane Pin Assignments

(ROWS A and B)...ooiiiiiiiieeeeeeeec

s A-5S

e A-5

RQDX1 (M8639) Module Backplane Pin Assignments

(ROWS € and D)oo A-6
e B-2
e e eebbiiee
e srree e
e eeret ieeriteeee
Console ODT COmMMANGS .......cooiureeiiiri

Vil

PREFACE

This technical manual provides you with information on the operation, configuration, and maintenance of

the MICRO/PDP-11 system.
Chapter 1 provides procedures for the operation of the MICRO/PDP-11
how to use the control panel and diskettes.

system. These procedures explain

Chapter 2 includes functional descriptions of the field-replaceable units (FRUs) that make up the
MICRO/PDP-11 system. The descriptions include the factory switch and jumper configurations of the
units.
Chapter 3 contains basic programming information. Included are the hardware-initiated diagnostics [from
the boot/diagnostic ROM (read-only memory)], the software-initiated diagnostics (from the user test and
Field Service test diskettes), and a summary of the types of operating systems that can be used to run the
MICRO/PDP-11 system.
Chapter 4 describes the optional terminals recommended for use with the MICRO/PDP-11 system.

Chapter 5 describes the environmental requirements needed for the MICRO/PDP-11 system to operate
properly, as well as directions for testing and isolating failures in the system. Removal and replacement
procedures for each of the FRUs are also included.
Chapter 6 explains the options that may be added to the MICRO/PDP-11 system and how the system
may be expanded.
Appendix A provides the backplane pin assignments for the modules installed in the MICRO/PDP-11
system.

Appendix B lists the on-line debugging technique (ODT) commands and their functions.
Appendix C is a glossary of terms that apply to the MICRO/PDP-11 system.

Related Documentation

The documents listed below provide additional information and may be of interest to MICRO/PDP-11
system users.

Title

Microcomputer Interfaces Handbook
Microcomputers and Memories Handbook
PDP11 Software Handbook
MICRO/PDP-11 Handbook
KDF11-BA CPU Module User’s Guide
KDF11-B Field Maintenance Print Set
MSV11-P User’s Guide

DZV11 Asynchronous Multiplexer Technical Manual
MICRO/PDP-11 System Site Preparation and
Verification Guide

MICRO/PDP-11 System Unpacking and Installation Guide
MICRO/PDP-11 System Owner’s Manual
MICRO/PDP-11 System Pocket Service Guide
MICRO/PDP-11 System Assembly Drawings
BA23-A Unit Assembly Drawings
11C23 Unit Assembly Drawings
11A23 Unit Assembly Drawings

MICRO/PDP-11 System Illustrated Parts Breakdown
MICRO/PDP-11 System Options Manual
RQDX1 Controller Module User’s Guide
XXDP+/SUPR User’s Manual
DEC/X11 User’s Manual

DEC/X11 Cross-Reference Manual

You can order these documents from:
Digital Equipment Corporation
Accessories and Supplies Group
P.O. Box CS2008

Nashua, New Hampshire 03061

Attention: Documentation Products

Document
Number

EB-20175-20

EB-18451-20
EB-18687-20
EB-24944-18
EK-KDFEB-UG
MP-01236
EK-MSVOP-UG
EK-DZV11-TM
EK-OLCPS5-SP

EK-OLCPS5-IN
EK-OLCP5-OM
EK-OLCPS5-PS
70-20442
BA23-A-DBP
11C23-D-DBP

11A23-D-DBP
EK-OLCPS-IP
EK-OLCP5-OD
EK-RQDX1-UG
AC-F348A-MC
AC-F053-MC
AC-F055C-MC

CHAPTER 1

INTRODUCTION AND SYSTEM DESCRIPTION

1.1 INTRODUCTION
The MICRO/PDP-11TM system is a general-purpose microcomputer system with integral mass storage.
The system is PDP-11 processor-based with 22-bit addressing capability. It runs a variety of software such

as the Micro/RSX, RSX-11M, RSX-11M-PLUS, RT-11, CTS-300, DSM, V7M-11, and Micro/RSTS
operating systems.
The MICRO/PDP-11 system is available in three packages: the rack mount package, the tabletop
package, and the floor mount package. The floor mount package is converted to the tabletop package by
removing the floor mount pedestal and installing four rubber feet. The three packages are shown in Figure
1-1.

1.2 SYSTEM DESCRIPTION
Several different models of the MICRO/PDP-11 system are available. Table 1-1 lists the various
MICRO/PDP-11 models and indicates the modules and components included with each. Refer to Chapter
2 for additional information about each of these system components.
Table 1-1

Model
Numbers

MICRO/PDP-11 System Model Comparison Chart

Components included:
KDF11-BP
MSV11-PK

DZV11-CP

RQDX1 RD51-A RX50-AA

11C23-F

11C23-R

SX-RAS500-EX
11C23-FA
11C23-RA

*
*

SX-RA500-FA

11A23-F

11A23-R

Included.
The -F (or -FA or -EX) suffix indicates a floor mount (or tabletop) package.

The -R (or -RA) suffix indicates a rack mount package.

The -FA or -RA suffix includes the Installation Accessories Box. The Installation Accessories Box includes: documentation.
diagnostic diskettes, a power cord, a terminal cable (BC22D-10), control panel labels, two screwdrivers, and a grant card
(G7272).

The SX- suffix includes the QJBS51-DZ General Software License.

1-1

FLOOR MOUNT

MR-g318

Figure 1-1

MICRO/PDP-11 System Packages

1-2

1.3

BASIC SYSTEM OPERATION

To operate the MICRO/PDP-11 system, you use the control panel to apply power to the system. You use

the RX50K diskette to begin running the diagnostic software or system operation software. A description
of each of these procedures follows.
1.3.1

Using the Control Panel

The control switches and status indicators for the components of the system are on the MICRO/PDP-11

system control panel. The switches and indicators are shown in Figure 1-2. The switches and their
functions are listed in Table 1-2. Some switches have a light-emitting diode (LED) mounted in their center
to indicate their status. The indicator LEDs and their meanings are listed in Table 1-3.

FLOOR STAND UNIT

dlifgliltlall

CONTROL PANEL

Micro

PDP-1 |

Run

DC OK

Halt

Restart

Fixed Disk 0
Write Protect

Ready

Removable Disk

Protect

Write

O O
1

Fixed Disk 0
Write Protect
Removable

Disk
Write

dlifgliltiall

Halt

TABLETOP/RACK MOUNT UNIT

CONTROL PANEL

Micro

Protect

PDP-I1

Ready

Restart

O__

MR.9310

Figure 1-2

MICRO/PDP-11 System Control Panel

1-3

Table 1-2

MICRO/PDP-11 System Control Panel Switches

Switch

Position

Function

Power 1,0

Turns on the system power. This switch

Turns off the system power.

The CPU halts and responds to console

(rocker
switch)

Halt

glows red when the system is on.

(LED lit)

on-line debugging technique (ODT)
commands. The basic ODT commands and
their functions are listed in Appendix
B. Refer to the Microcomputers and
Memories Handbook (EB-18451-20) for
additional ODT information.

Out

Enables the processor to run.

(LED off)

Restart
(momentary
switch)

When the halt switch is out (LED off),
the CPU restarts by carrying out a
power-up sequence and displaying the

bootstrap dialog as shown in Paragraph
1.3.5.

When the halt switch is in (LED lit),
the restart switch will single-step the
current program, executing a single
instruction each time the switch is
pressed.

Fixed Disk O

Protect Write

(LED lit)
Out

(LED off)

Fixed Disk O
Ready

Out

(LED lit)

(LED off)

Write protects the RDS1 fixed disk
drive.

Enables writing to the RD51 fixed

disk drive.

Places the RD51 fixed disk drive

on-line.

Places the RDS51 fixed disk drive

off-line.

Table 1-3

Indicator
LED
Run

MICRO/PDP-11 System Control Panel Indicator LEDs

Function

This LED is lit when the CPU is operating; the LED goes off when the CPU is
not executing instructions.

DC OK

This LED is lit when the power supply is generating correct dc power output
voltages.

Removable Disk
Write Protect*
1

When this LED is lit, the diskette in RX50 diskette drive 1 is write-protected.

When this LED is lit, the diskette in RX50 diskette drive 2 is write-protected.

Removable disk write protect is selected by placing an adhesive label over the write-protect slot of the diskette.
Paragraph 1.3.4 for complete instructions.

1-5

Refer to

1.3.2

Handling and Storing Diskettes

Improper handling or storage of diskettes will destroy recorded data and may damage the read/write
heads in the RX50 diskette drive. Here are some suggestions on handling diskettes.

Return diskettes to their protective envelopes when they are not being used.
Store diskettes vertically and loosely to avoid warping their jackets.

Use a felt tip pen to mark the diskettes’ jackets. (Using a pencil or ball-point pen creases the

jacket and the diskette inside.)

Insert diskettes into the drives carefully. Never force the drive doors closed.

Never remove or insert a diskette while either of the two active drive lights on the RX50

diskette drive is lit.

CAUTION

Opening a drive door while either drive is busy (that
is, while either of the active drive lights is lit) will
damage data stored on the diskette(s). The locations
of the active drive lights are shown in Figure 1-3.

Never touch the recording surface where the diskette jacket is cut away for the read/write

heads. Fingerprints will damage recorded data and the read/write heads.

Never store diskettes in direct sunlight or near heaters where temperatures go above 52° C

(125° F). High temperatures cause the jackets to warp.
Never bend or fold the diskette jacket.

Never bring diskettes near strong magnetic fields [over 50 oersteds within 76 mm (3 in)] and do
not let steel objects touch the diskettes. In both cases, the data on the diskettes could be erased
or weakened.

1-6

[

ACTIVE DRIVE
LIGHT
1

ACTIVE DRIVE
LIGHT
2

MR.9312

Figure 1-3

RXS50 Diskette Drive Active Drive Light Locations

1-7

Loading and Unloading Diskettes

1.3.3

You load diskettes into the RX50 diskette drive in the following way.

Open the door of the desired drive. To open the door, press on the edge closest to the outside of
the diskette drive. (See Figure 1-4 for drive 1, Figure 1-5 for drive 2.)

MR-g321

Figure 1-4 Opening Drive Door 1 of the RX50 Diskette Drive

1-8

Figure 1-5

Opening Drive Door 2 of the RX50 Diskette Drive

1-9

Properly orient the diskette and insert it into the slot until it makes contact with the solid stop.
The diskette should be oriented so that the read/write head access slot in the jacket is inserted
into the drive first. The drive will record on the surface of the diskette closest to the center of
the diskette drive. (See Figure 1-6 for drive 1, Figure 1-7 for drive 2.)

ORANGE ARROW

WRITE-PROTECT
NOTCH DOWN

READ/WRITE ACCESS
SLOT FORWARD

ORANGE ARROW

WRITE-PROTECT
NOTCHTO LEFT

MR-8323

Figure 1-6

Inserting a Diskette into Drive 1

1-10

WRITE-PROTECT
NOTCH UP

ORANGE ARROW

READ/WRITE ACCESS
SLOT FORWARD

ORANGE ARROW
WRITE-PROTECT
NOTCH TO RIGHT

MR.9314

Figure 1-7

Inserting a Diskette into Drive 2

Close the door. Gently push the end of the door toward the center of the diskette drive. (See
Figure 1-8 for drive I, Figure 1-9 for drive 2)

MR-9324

Figure 1-8

Closing Drive Door 1

1-12

9999999

Figure 1-9

Closing Drive Door 2

The two active drive lights on the front of the diskette drive indicate which diskette the controller is
currently accessing.

Write Protection of Diskettes

1.3.4

The RX50 diskette drive is equipped with a write-protect feature that protects the data on a diskette from
accidental erasure. To write protect a diskette, cover the write-protect notch on its jacket with a writeprotect tab. Some diskettes come with a package of adhesive-backed write-protect tabs. If these are not
available, use ordinary adhesive-backed labels. Figure 1-10 shows how to apply a write-protect tab.

WRITEPROTECT
TAB

/\
MR-10174

Figure 1-10

Write-Protect Tab Application

1.3.5 Bootstrap Commands and Dialog
N /DMND 11 cvrobnemn 1o
cvers
T UrE-11 Jbt\.«lll is SvntChfid
(VIILNVY/
LI RAYAD
VY [IEN b

lted)

a ted
)

the fallowino message
the

tollowing

message

appears on the console terminal if switch S1 on the KDF11-BE modul is in the appropriate configuration.
(Table 2-2 lists the possible configurations of switch S1.)
KDF11B-BE ROM V0.8
128KW MEMORY
9 STEP MEMORY TEST
STEP 123456789

TOTAL MEMORY ERRORS =0
CLOCK ENABLED

(This message is described in Paragraph 3.2. If the message does not appear, refer to Paragraph 5.3.1 to
determine the cause.)

If the terminal used is not an American National Standards Institute (ANSI) terminal, the console displays
6n twice. (This is only an indication of the type of terminal being used.) If the terminal is an ANSI
hardcopy-type terminal, it performs two line feed functions before it proceeds to the next message. If the
terminal is an ANSI video terminal, it proceeds directly from the message listed above to the next
message.

At this point, the system automatically attempts to find bootable mass storage control protocol (MSCP)
media on the system. (To have other types of media automatically booted, switch S1 on the KDF11-BE
module must be reconfigured. Table 2-2 lists the possible configurations of switch S1.) If neither the

diskette drives nor the fixed disk is bootable at this time, a message similar to the following is displayed.

ERROR UNIT DUO
ERR 16 NOT BOOTABLE
ERROR UNIT DU2
ERR 16 NOT BOOTABLE

ERROR UNIT DU
ERR 16 NOT BOOTABLE
WISH TO REBOOT [Y,(N)]?
You can, at this time, insert any bootable RX50K diskette. For example, suppose you insert the user test
diskette. When you type Y and press the Return key, the system responds with the following message. (In
this manual user input and key names are printed in boldface.)
BOOTING FROM DUI
Loading . . . Please wait . . . ..

The unit specified in the message (in this case DU1) depends on which diskette drive you used. During the

loading phase of the user test diskette, the console terminal displays a series of periods. This is followed by
the appropriate prompt for the specific type of software present on the diskette.

1.3.6 Using XXDP+ Diagnostic Software to Copy and Create Backup Diskettes
You can copy the diagnostic software on one diskette onto a spare diskette by using the copy utility

program, which is available on the Field Service test diskettes. This program transfers the complete
contents of one diskette to another. To copy operating system diskettes, refer to the appropriate software

manual for directions.

CAUTION
Be careful when using the copy command. If the
source and destination codes are wrong and the
source diskette is not write-protected, the system
may copy a blank diskette onto a master diskette.

This would destroy the original information on the
master diskette.
Copy a diskette in the following way.
.

Find the Field Service test diskette that lists the UPD?2 utility in its directory. Load this writeprotected diskette into diskette drive 1.

Load a blank diskette into diskette drive 2. This diskette must not be write protected.

Initialize the system by pressing RESTART on the control panel.

After diskette drive 1 has been booted (see Paragraph 1.3.5), some XXDP+ dialog appears and
the system monitor prompt . (period) is displayed. Type R UPD2 and press the Return key as
shown below. (In sample computer dialog, <CR> means to press the Return key.)
.R UPD2<CR>
UPD2.BIN

CHUP2B1 XXDP+ UPD2 UTILITY

RESTART:NNNNNN

(a restart address is specified)

The * (asterisk) is the prompt for the UPD2 program monitor. Type the source and destination
information for the copy program and press the Return key as follows.
COPY DQ2:=DQI1:<CR>

The data on the diskette in drive 1 (DQ1) will become the data on the diskette in drive 2 (DQ2).
This destroys any data previously stored on the diskette in drive 2.
NOTE

In a system that has both an RDS1 fixed disk drive
and an RX50 diskette drive, the fixed disk drive is
assigned as drive 0, and the diskette drives are
assigned as drive 1 and drive 2. In a system with no
RD51 fixed disk drive (refer to Table 1-1), the diskette drives are assigned as drive 0 and drive 1.

At this point the system responds with the following.
USER DATA ON DQ2 WILL BE DESTROYED
PROCEED? (Y/N CR=N)

FILE COPY OR IMAGE COPY? I=BLOCK F=FILE
*

At this time, make sure the master diskette is in drive 1 and the blank diskette is in drive 2.
Also, verify that you gave the command in step 5 correctly. If you respond with an F, the
system does the following.

Zeros the output diskette (the blank diskette in drive 2).

Transfers the boot image and the monitor core image from the input diskette to the output

Performs a file-by-file transfer from the input diskette to the output diskette.

diskette.

If you respond with an I, you are selecting an image copy. This selection requires that the
devices involved be identical (for example, in copying from drive 1 to drive 2 of the RX50
diskette drive). In an image copy, each physical block of the input diskette is written to the
corresponding physical block of the output diskette. When the operation is completed, the data
on the output diskette is compared to the data on the input diskette in order to verify the
accuracy of the transfer. This process takes more time than a file copy does.

1-16

In the example below, a file transfer is performed. Type F and press the Return key.

F<CR>
Though this process usually takes a few minutes, its duration varies with the number of files

that must be transferred. When the process is done, a completion message is displayed, and the
system returns to the UPD2 prompt * (asterisk).

Remove the master diskette from drive 1 and store it for future use. Remove the new copy from
drive 2, and use it as your working copy. To copy another diskette at this time, insert a master
diskette into drive 1 and a blank diskette into drive 2. Repeat the process starting at step 3.

To return to the system monitor . (period) prompt, type the following.

EXIT<CR>
10.

The system displays the system monitor . (period) prompt on the console terminal. (Additional
uses for the XXDP+ diagnostic software system of the Field Service test diskettes are described
in Paragraphs 5.5 and 5.6.)

CHAPTER 2

SYSTEM COMPONENTS

2.1 INTRODUCTION
The MICRO/PDP-11 system is a general-purpose computer system that is available in several package
designations. Each designation (refer to Table 1-1) indicates a specific combination of the following
components: KDF11-BP central processing unit (CPU) assembly, MSV11-PK memory, DZV11-CP asynchronous multiplexer, RQDX1 disk drive controller, RD51 Winchester fixed disk drive, and RX50
diskette drive. These components are installed in a BA23-A mounting box.
Each of the components of the MICRO/PDP-11 system listed above is considered a field-replaceable unit
(FRU). Chapter 5 gives the procedures used to isolate failures in the FRUs and the procedures for their

removal and replacement.
2.2

KDF11-BP CENTRAL PROCESSING UNIT (CPU) ASSEMBLY

The KDF11-BP CPU includes a KDF11-BE (M8189) central processing unit module, a CPU patch and

filter panel, and a CPU patch and filter panel cable that connects the two.
The KDF11-BE (M8189) is a quad-height module that occupies the first slot in the backplane. It consists
of a central processing unit, a line frequency clock, boot/diagnostic ROMs, two serial line units (SLUSs),
and a memory management unit (MMU). Additional 40-pin sockets located on the module provide for the
addition of an optional floating-point processor (FP) chip or a commercial instruction set (CIS) chip.
The KDF11-BE module uses the extended LSI-11 bus (22-bit addressing) with 4-level interrupt bus
protocol, and supports up to four megabytes of memory.

2-1

The KDF11-BE module contains numerous jumpers and two dual in-line package (DIP) switch units,
S1(E102) and S2(E114), that allow you to select various module features. The locations of these switches
and jumpers, as well as those of the diagnostic LEDs, are shown in Figure 2-1. The jumpers allow
reconfiguration of the module for various applications. The factory jumper configuration is listed in Table
2-1.

COMMERCIAL
INSTRUCTION

COMMERCIAL INSTRUCTION
SET (KEF11-BB OPTION)

SET

SLU 2 CONSOLE

fi V PWR ON LED
ARAR_ A
02|
/I—Lso-1

MSD

C6J7

L__V_._J

J9
Q)5

DIAGNOSTIC

DISPLAY

FLOATING POINT
(KEF11-AA OPTION)

J29/
J28

St
s2
=11 cell DAL 00

sLu 1<

aomeprom | stu2d

== ]

SOCKET

(HIBYTE) 4—»

ROM/EPROM | [—"]
1
o

SOCKET

{LOBYTE)

(2Bl

DATA AND CONTROL
(CPU)
MEMORY MANAGEMENT

£74

(MMU)

|mB

419

\J'\ua

°-3

o |8{®m] IDAL 07
=

<18

E114 E102

J14 Qv

J23

J24 28 °0J22 w2 Wi

oeocao
E126 07:00 L— 2gEEANDNOTES
3 —rl
]

J13—wo

J12-

J”/':MO
r"

[‘

NOTES:

I—I'I

1. INSTALLED JUMPERS SHOW THE MICRO/PDP-11 CONFIGURATION.
2 WHEN 8 K EPROMS OR 8 K MASKED ROMS ARE USED, J23 IS CONNECTED TO J24.
3. WHEN 2 K EPROMS ARE USED, J23 IS CONNECTED TO J22. WHEN 2 K MASKED ROMS
ARE USED, J23 IS CONNECTED TO J24.

MR-10273

Figure 2-1

KDF11-BE Module Jumper, Switch, and
Diagnostic LED Locations

2-2

Table 2-1

Jumpers*
J4-J5

KDF11-BE Module Factory Jumper Configuration

Function
Disables the CPU halt feature from the console serial line unit (SLU) Break key on
the terminal.

J6-J7

For manufacturing use only; must be installed for normal operation.

J8-J9

For manufacturing use only; must be installed for normal operation.

J18-J19

CPU power-up mode: bootstrap from location 773000.

J20-J21

For manufacturing use only; must be installed for normal operation.

J23-J24+

In for use of 8 K masked ROMs or 8

J26-127

Connects the output of the console serial line drive to the serial line.

J29-J30

One stop bit for the console SLU port.

J34-J35

Connects LINMF(1)H to the SLU UART reset input.

J37-138

One stop bit for the second SLU port.

J41-J42+

Uses an external clock for the console SLU.

J44-J45+

Uses an external clock for the second SLU.

Provides bus grant continuity for the BIAK signal.

Provides bus grant continuity for the BDMG signal.

K EPROMS. (J22-J23 must be removed.)

All jumpers histed here are installed; all others on this module are removed.
Different from

the jumper configuration used on the

KDF11-BA (M8189) module used in the

application.

2-3

PDP-11/23+ system

The first switch unit (E102) consists of eight switches that are used to select one of various available
bootstrap/diagnostic programs. The configuration for the bootstrap/diagnostic switch unit is listed in
Table 2-2.

NOTE

In order for the boot/diagnostic ROMs to function
correctly, the memory management unit (MMU)
chip (part number 21-15542-01) must be installed on
the KDF11-BE module. The MMU is provided with
the KDF11-BE module.

Table 2-2 KDF11-BE Module Bootstrap/Diagnostic
Switch Configuration - Switch S1(E102)
Switch Position

76 54321

Function

XX00O0O0O0OO

Inhibit power-on auto-sequence boot.

0 X XXXXXX

Console terminal is not an ANSI mode video terminal.

X XX X X X X*

Console terminal is an ANSI mode video terminal.

X0 XXXXXX

Inhibit quick verify memory diagnostic.

XXXXX X*

Execute quick verify memory diagnostic.

XX00001O0

Select TU58 device 0.

XX0000T11

Select TUS8 device 1.

XX000100

Select RX01 device 0.

XX000101

Select RX01 device 1.

XX000110

Select RX02 device 0.

Select RX02 device 1.

XX001000

Select MSCP device 0.

001

Select MSCP device 1.

XX001010

Select MSCP device 2.

XX001011

Select MSCP device 3.

XX001

100

Select MSCP device 4.

XX001

101

Select MSCP device 5.

XX001

110

Select MSCP device 6.

XX0001

XX001

2-4

Table 2-2

KDF11-BE Module Bootstrap/Diagnostic

Switch Configuration - Switch S1(E102) (Cont)
Switch Position
8 76 54321

Function

XX001

Select MSCP auto-boot.

XX01

0000

Select RLO1/RL02 device 0.

XX01

0O0O01

Select RLO1/RL02 device 1.

XX010010

Select RLO1/RLO02 device 2.

XX01

0011

Select RLO1/RLO02 device 3.

XX01

1000

Reserved for future addresses.

XX1 101 11
XX1

11000

Select DECnet DUV,

XX1

11001

Select DECnet DLV11-E.

XX1

11010

Select DECnet DLV11-F.

111111

Loop selftest but do not execute memory diagnostic.

111111

Loop selftest and memory diagnostic.

=O0ff

=0On

= Don't care

The MICRO/PDP-11 system is shipped with switches S1-1. S1-2, S1-3. S1-4, S1-7. and S1-8 on.
Switches S1-5 and S1-6 arc off.

As indicated in Table 2-2. the format for switch S1 is as follows.
When bits 6 through 4 are used to identify the controller type. bits 3 through | identify the unit
number.
When bits 6 through 3 are used to identify the controller type, bits 2 and I identifyv the unit

number.
When bits 6 through 2 are used to identify the controller type, bit | identifies the unit number.
When bits 6 through 4 are all Is (the DECnet identifier). bits 3 through 1 identify the link tvpe.

When bits 6 through

1 arc all

1s, the selftest loops. and bit 7 determines if the memory

diagnostic is to be included.

2-5

All undefined switch configurations will cause an error message to be displayed and the console terminal to
respond to on-line debugging technique (ODT) commands.

The second switch (E114) also consists of eight switches and selects the baud rates for the console terminal
SLU and the second SLU. The factory configuration for the baud rate switch unit is listed in Table 2-3. In
the MICRO/PDP-11 system, this switch unit (E114) is disabled by inserting jumpers J41-J42 and J44-J45
(as listed in Table 2-1). These jumpers are used to select an external clock to control the SLUs. The
external source of the clock is discussed below.

NOTE

Table 2-3 shows the factory configuration for
switch S2. The MICRO/PDP-11 system provides
you with external switches on the patch and filter
panel (see Table 2-4) for use in changing the baud
rates of these SLUs.

Table 2-3 KDF11-BE Module SLU Baud Rate
Factory Switch Configuration — Switch S2(E114)
Switch

o0~
ON

W
-

Number

Switch

Position

Function

Console terminal SLU set for 9600 baud.

Off
Off
Off

Second SLU set for 9600 baud.

Off
Off
Off

The -BP designation of the KDF11 CPU indicates that the cable and the patch and filter panel that
connect to the CPU are included. The CPU’s patch and filter panel provides simple and convenient means
of interfacing a console terminal, as well as a second SLU, to the KDF11-BE module. The panel also
provides two rotary switches that allow you to change the baud rates for the two devices without the need
to change switch positions on the M8189 module.

The CPU patch and filter panel is mounted in the patch and filter panel assembly, located under the rear
plastic cover of the system unit. The patch and filter panel assembly is described in Paragraph 2.6.4.
Figure 2-2 shows the CPU patch and filter panel and the locations of the rotary switches. Table 2-4 defines
the rotary switch settings and the corresponding baud rates.

2-6

——

|S
@

0000000000000

000000000000
N

AO (CONSOLE)

0000000000000

000000000000

@ 3
4

5
6
7

1345

11 3600

110

150

300
600
1200

1800
2000

2400

4800

7200
9600
19200

14
15

ROTARY

SWITCH

MR-9407

Figure 2-2

CPU Patch and Filter Panel

Table 2-4

CPU Patch and Filter Panel

Rotary Switch Settings

Baud Rate
Selected

]

Switch
Position

p——

RN No WV, RN SR ST O

110
134.5

150
300

600
1200
1800

a0
— [ ENoNe

SWITCH

2000
2400

3600
4800
7200

9600
19200

ROTARY

BAUD RATE

]

2-7

The KDF!1-BE module also contains five LEDs that provide status information about the module. The
large green LED indicates that +5 V is present on the module. The other four LEDs are used for error
detection. Table 5-4 lists the error codes provided by these LEDs. The backplane pin assignments for the
KDF11-BE module are listed in Appendix A. You can obtain more detailed information on the KDF11BE CPU module from the KDFI1-BA CPU Module User's Guide, (EK-KDFEB-UG).
2.3

MSV11-PK MEMORY MODULE

The MSV11-PK memory (M8067) is a quad-height module that provides 256 K bytes of storage and
occupies the backplane slot adjacent to the KDF11-BE CPU module. The MSV11-PK module is designed
to be used with the extended LSI-11 bus (22-bit addressing), and contains a metallic oxide semiconductor
(MOS) random-access memory (RAM). The MSV11-PK module provides storage for 18-bit words, each
made up of 16 data bits and 2 parity bits. The module also contains parity control circuitry for byte parity
generation and checking, and a control and status register (CSR). Two LED:s indicate module status: the
green LED indicates the presence of +5 V on the module, the red LED indicates the detection of a parity
error.

Additional memory modules are available as options for system expansion. Each memory module added to
a system must be reconfigured by repositioning jumpers on the module’s wirewrap stakes. The factory
configuration for these jumpers is shown in Figure 2-3 and listed in Table 2-5. Refer to Chapter 6 for
jumper relocation information for added memory modules. Backplane pin assignments for the MSV11-PK
module are provided in Appendix A. You can obtain more detailed information on the MSVI11-PK
memory module from the MSVII1-PK User’s Guide (EK-MSVOP-UQG).

2-8

) 8

]

—

16 K MOS CHIPS
BITS

BITS

WRITE WRONG

ROW O

M8067
LA

PARITY
TESTING

M8067

ROW

BY Tt J

r---o4

Lol

I'_TIM 190 H

r-o3 '

SYSTEM

—
ererer

]

i
l

L —_— — 0 13

7 Ty
g——]; !

STARTING ADDRESS

Ve r—u
=l

_ INHIBIT

L L7 53 00

og
= opP

—_—

oN
oM

£
=

ROwW 2

- =

IrBAusH

JUMPERS

L 016 |
o
I

= Xo

rotal
r—l--15]|

l
l

279

1 15

D
v
=)

COLUMN LATCH

'
I

18/22-BIT |

---210 I

fi]

45 43 a4l
a0 -

<9 :
o
>

6-¢

ROW 0

ROW

}

ROW 2

e —_

ROW LATCH

b
ROW

|CSR ADDRESS JUMPERS

ROW

Fo
.

PONER JUMPERS
oo
W

NON

SINGLE

wa
W9
wre

oo
Wy

of Jo
W2

oo
Wi

—

GRANT

DEVICES

BATITERY BACKUP

W
W13

VOLTAGE

POWER JUMPERS

ECWi )

W13 W12

il VOO

POWER JUMPERS

BATTERY BACKUP

VOLTAGES

CONTINUITY

AND W2 IN FOR

Q. (O MACHINE

DECOUPLE +5 Vv

(. CD AND (322.CD MACHINE

5CR
+5 VDD

Figure 2-3

o
Yo-5 vV

[

—

POWER JUMPERS
WITHOUT BATTERY BACKUP

—Hl— POWER JUMPER FOR 64 K CHIPS

DECOUPLE +5 Vv

W12

.vfi‘vv o

Q22-Q27

MACHINF

W14

AND W2 OUT

FOR

—l}— POWER JUMPER FOR BOTH 64 K/16 K CHIPS

MSVI1-PK Mcmory Module Factory Jumper Configuration

737

Table 2-5

MSV11-PK Memory Module Factory Jumper Configuration

Jumper

State

Function

Wil
W2
W3

I
|
R

Grant continuity
Grant continuity
Power jumper, =5 V

W13
Wli4
W15

|
R
I

Power jumper
Power jumper
Power jumper

3to9
4to 10
6 to7

I
|
I

13 to 15
14 to 16

|
I

W4
W5
W9
W10
Will
Wi2

8, 21

22 to 23

|
|
|
R
R
R

[

Power jumper, decoupler +5 V
Power jumper, decoupler +5 V
Power jumper
Power jumper
Power jumper
Power jumper

Row latch - 64 K MOS chip
Row latch - 64 K MOS chip
Write wrong parity

Ground

Column latch - 64 K MOS chip
Column latch - 64 K MOS chip
Inhibit

Multiple voltage MOS RAM access time

AtoE

CSR address bits

LtoK

44 to 45
Bto E
CtoE
DtoE

R
R
R

Mto R
N to R
PtoR

R
R
R

StoU
TtoU

R
R

VoY
WtoY
XtoY

R
R
R

Sitariing address Liis

2-10

2.4
DZV11-CP ASYNCHRONOUS MULTIPLEXER
The DZV11-CP asynchronous multiplexer includes a DZV11-A (M7957) asynchronous multiplexer mod-

ule, a patch and filter panel, and a cable that connects the panel and module.

The DZVII-A asynchronous multiplexer is a quad-height module that occupies the backplane slot
adjacent to the last memory module on the SX-RAS500-EX and SX-RAS00-FA models of the
MICRO/PDP-11 system. (Refer to Table 1-1.) The DZV11-A module is an option on all other models.

This module, together with the patch and filter panel, provides an interface between the LSI-11 bus and up

to four asynchronous serial data communication channels.

The DZV11-A module provides EIA interface levels and enough data set control to permit dial-up (autoanswer) operation with modems using full-duplex operations.
There are 16 jumpers and 2 DIP switches on the DZV11-A module. These are used to change the
operation of the module for various applications. The locations of these jumpers and switches is shown in
Figure 2-4. The factory jumper configuration and the factory switch settings are listed in Tables 2-6 and 2-

7, respectively.

wet—""

s W6

LTI

pes

W4/

——

Wwa

W13

W14

W15

W16

finnumununfl o

A12

w10

\
—

NOTES:

W11

’/

ADDRESS SWITCHES

SWITCHES

1. JUMPERS W9, W12, W13, W14, W15, AND W16 ARE REMOVED ONLY FOR MANUFACTURING
TESTS. THEY SHOULD NOT BE REMOVED IN THE FIELD.
2. JUMPERS W10 AND W11 ARE IN FOR Q/Q AND Q22/Q22 MACHINES AND ARE OUT FOR

Q/CD AND Q22/CD MACHINES. THEY PROVIDE GRANT CONTINUITY.

Figure 2-4

DZVI11-A Module Jumper and Switch Locations

Table 2-6

DZV11-A Module Factory Jumper Configuration

Jumper

State

Line

Function

Wi
W2
W3
w4

R
R
R
R

03
03
01
00

These four jumpers connect the
data terminal ready (DTR) signal
to the request to send (RTS)
signal.

W5
Wé
W7

R
R
R

03
02
01

These four jumpers connect the
forced busy (FB) signal to the
request to send (RTS) signal.

W9
W10

|
I*

Wil

W12

|
I

W13
W14
W15
W16
I

These eight jumpers supply
LSI-11 bus signals.

= Installed

= Removed

These jumpers would be removed if the module were to be installed in a Q/CD slot of the backplane.
(Figure 2-10 shows the locations of the Q/CD backplane slots.)

Table 2-7

DZV11-A Module Factory Switch Settings

Number

Switch

Position

Address Switch Selection (160100)
A3
Ad
AS
A6
A7
A8
A9
Al0
All
Al2

10
9
8
7
6
5
4
3
2
1

Off
Off
Off
On
Off
Off
Off
Off
Off
Off

Vector Switch Selection (310)
V3
V4
\A
V6
V7
V8

6
5
4
3
2
1

On
Off
Off
On
On
Off

The -CP suffix of the DZV11 asynchronous multiplexer also includes a cable and
a patch and filter panel
that provide a convenient means of interfacing terminals to the DZV11. The DZV11
patch and filter panel
is mounted in the patch and filter assembly, located under the rear plastic cover of the
system unit. The
patch and filter panel assembly is described in Paragraph 2.6.4. The DZV11
patch and filter panel is
shown in Figure 2-5.

CfZOOOOOOOOOOOZZ&D

0000000000000

(000000000000
Cfigoooooooooooozzt)

LINE 1

Ci&ooooooooooool&)

LINE 2

0000000000000

d&000000000000>
0000000000000 »

—

LINEO

LINE 3
MR-3409

Figure 2-5

DZVI11 Patch and Filter Panel

Backplane pin assignments for the DZV11-A module are listed in Appendix A. Refer to Chapter
6 for
expansion information. You can obtain more detailed information on the DZV11-A module
from the
DZVII Asynchronous Multiplexer Technical Manual (EK-DZV11-TM).

2-13

2.5 RD51/RX50 CONTROLLER AND DRIVE SUBSYSTEM

The RD51/RX50 controller and drive subsystem includes the RQDX]1 controller module, an RD51 fixed
disk drive, and an RX50 diskette drive.
2.5.1

RQDX1 Controller Module

last occupied slot in the
The RQDXI1 controller (M8639) is a quad-height module that is mounted in thefixed
disk drive and the
backplane. It is a high-functionality disk controller that interfaces the RD51 access
(DMA) type of
RX50 diskette drive to the extended LSI-11 bus. The controller is a direct memory
controller
RQDX1
the
interface and conforms to mass storage control protocol (MSCP). Figure 2-6 shows tions. A cable
(part
module’s jumper and LED locations, and Table 2-8 lists the factory jumper configura
circuit
printed
ion
number BCO6L-1C) connects the RQDX1 controller module to the signal distribut
board, where the signals are distributed to the individual drives. Additional information is provided in the
RODXI Controller Module User’s Guide (EK-RQDX1-UG).

—1

D7 D8 D9 D10

J\\l/J{f

fwa (w3

NOTES:

1. ADDRESS SELECTION {AiZ THROUGH AZ) AND

LOGICAL UNIT NUMBER SELECTION (LUN7 THROUGH
LUNO) IS MADE BY ATTACHING TWO POSITION

JUMPER CLIPS (PART NO. 12-18783-00). THIS

ELIMINATES THE NEED TO WIRE WRAP JUMPERS
ONTO THE ADDRESS OR LOGICAL UNIT NUMBER
STAKES.

2 JUMPERS W1 AND W2 ARE IN FOR Q/Q AND Q22/Q22
MACHINES AND ARE QUT FOR Q/CD AND Q22/CD

MACHINES. THEY PROVIDE GRANT CONTINUITY.

MR-99156

Figure 2-6

RQDXI1 Controller Module Jumper and LED Locations

2-14

Table 2-8

RQDX1 Controller Module Factory

Jumper Configuration

Jumper

State

Address Selection (172150)

Out

Al0

All

Out

Al2

Logical Unit Number (0)
LUNI

Out

LUN2

Out

LUN3

Out

LUN4

Out

LUNS

Out

LUNG6
LUNY7

Out
Out

LUNS

Out

These four jumpers are for

manufacturing use only.

2-15

Drive

2.5.2 RDS5I1 Fixed Disk
vable 133.4 mm (5.25
The RDS1 fixed disk drive is a random-access storage device that uses two nonremo
306 data tracks. The total
in) disks as storage media. Each disk surface uses one movable head to servicefixed
disk drive is shown in
formatted capacity of the 4 heads and surfaces is 11 megabytes. The RDS1
Figure 2-7.

NOTE

When replacing the RD51 fixed disk drive with a
spare unit, the spare must be reformatted before
running diagnostics or using the RDS1 fixed disk
drive.

MR-9408

Figure 2-7

RDS51 Fixed Disk Drive

g box. Two cables (part numbers
The RD51 fixed disk drive is an FRU contained in the BA23-A mountin
the RQDX1 controller module.
to
drive
disk
fixed
RD51
the
17-00282-00 and 17-00285-00) connect
drive (and the RXS50 diskette
disk
fixed
RDS1
the
connects
Another cable (part number 70-20435-1K)
drive) to the power supply.

2-16

2.5.3 RXS50 Diskette Drive
The RX50 diskette drive is a random-access, dual-diskette storage device
mm (5.25 in) RXS50K diskettes. The device’s total drive capacity

two access doors and slots for diskette insertion and removal. An

informs you when that drive is busy.

that uses two single-sided 133.4
is 800 K bytes of formatted data. It has
active drive light for each diskette slot

The RX50 diskette drive is an FRU contained in the BA23-A mounting
box. One cable (part number 1700285-02) connects the RX50 diskette drive to the RQDX1 controller
module. Another cable (part
number 70-20435-1K) connects the RX50 diskette drive (and the RDS1
fixed disk drive) to the power
supply.
Because the RXS50 diskette drive is considered an FRU, no adjustme
nt or alignment procedures are
provided. The RXS50 diskette drive, shown in Figure 2-8, is adjusted
and aligned at the time of
manufacture.

NOTE
If the system is being moved, it is recommended that

the cardboard shipping insert be installed, if one was
used initially, to prevent damage to the RX50 disk-

ette drive’s read/write heads.

MR-9532

Figure 2-8

RXS50 Diskette Drive

2-17

2.6 BA23-A MOUNTING BOX
ne with a card frame assembly, an
The BA23-A mounting box contains two dc fans, an H9278-A backplafilter
panel assembly. The BA23-A
H7864 power supply, a control panel (54-15610), and a patch and

mounting box is shown in Figure 2-9.

MR-9543

Figure 2-9

BA23-A Mounting Box

is available in two models. The
The BA23-A mounting box may be purchased as a separate unit and
The BA23A-AF is the floor
BA23A-AR is the rack mount model, with front plastic cover and sleeves.
floor mount model is easily
mount model, with front and rear plastic covers, sides, and a pedestal base.g The
four rubber feet. The BA23-A
converted for tabletop use by removing the pedestal base and installin
mounting box does not include: power cord, disk(ette) drives, patch and filter panels, documentation, or
any modules mounted in the backplane.
Backplane Assembly

g both dual- and quad-height
The MICRO/PDP-11 system uses an 8-slot H9278-A backplane forAsmountin
in Figure 2-10, connectors A
modules. (The modules must be extended LSI-11 bus-compatible). shown
signals to the modules. The C
and B of each backplane slot supply Q22 bus (that is, extended LSI-11 bus)
slots. This interconnecand D connectors of slots 1, 2, and 3 provide an interconnection between the4 three
8) provide the same
through
tion is referred to as the CD bus. The five remaining backplane slots (slots
The backplane’s
rs.
connecto
B
Q22 bus signals on the C and D connectors as those supplied on the A and

2.6.1

grant continuity chaining is shown in Figure 2-11.

2-18

H7864
POWER

J3|1

CONNECTOR
J1

Q22

XZ1

‘\\ CONTROL
1

PANEL

CONNECTOR

SIDE 1

XZ2
1

XZ3
1

XZ4
1

NOTES:

1. CONNECTORS J1, J2, J3, AND J4 ARE MOUNTED ON SIDE 2.
2. XZ1-4 ARE BACKPLANE TERMINATOR SOCKETS. THE SIP TERMINATION RESISTORS MOUNTED
IN
XZ1-4 MUST BE REMOVED WHEN EXPANDING BEYOND THIS BACKPLANE.
3. J3 AND J4 ARE NOT POWER SOURCES. THEY ARE USED TO SUPPLY POWER TO THE BACKPLANE
WHEN THE RD51-A FIXED DISK DRIVE OR RX50-AA DISKETTE DRIVE IS NOT INSTALLED.
MR-11887

Figure 2-10

Backplane

;

C-D

‘

C-D

{

—

-’

G ——————

NOTE:

C+D (1-3) = CD INTERCONNECT
OTHERS = Q22 FORMAT

Figure 2-11

MR.-9416

Backplane Grant Continuity Chaining

The backplane is attached to a signal distribution printed circuit board, which provides connectors for the
fixed disk drive, diskette drive, RQDX1 controller module, and control panel cables. Figure 2-12 shows
the layout of the signal distribution printed circuit board.

2-19

—

-—

----------------------------------

.............

@
J1FIXED DISK 1

J7 FIXED DISK O

J8 REMOVABLE DISK 142

J5 FIXED DISK
1

CONTROL PANEL

POWER SUPPLY

CONNECTOR

Figure 2-12

J10

—

Oxxxxl

*ON BACKPLANE (SIDE 2)

esesesese

0¢-¢

Signal Distribution Printed Circuit Board Layout

MR 9540

2.6.2 H7864 Power Supply
The H7864 power supply, shown in Figure 2-13, supplies fixed (nonadjustable) voltages of +5 V and +12

V to the backplane of the MICRO/PDP-11 system. The power supply also provides these voltages to the
fixed disk drive and diskette drive installed in the mounting box. Two brushless dc fans are driven by the

H7864 power supply; one fan cools the logic modules and power supply, the other fan cools the fixed disk
drive and diskette drive.

F[EE

_—
MR-3536

Figure 2-13

H7864 Power Supply

The H7864 power supply also supplies three system control signals to the backplane of the MICRO/PDP11 system. Two of these signals, BDCOK H and BPOK H, are asserted when system power is stable. The
third signal, BEVENT L, is an external line clock interrupt request to the CPU.

2-21

2.6.3

Control Panel (54-15610)

The MICRO/PDP-11 system control panel, shown in Figure 2-14, consists of a printed circuit board
equipped with switches and LEDs. This printed circuit board also provides test points for +5 Vand +12 V.

SWITCH 1

LINE TIME

CLOCK

Micro

ENABLE/
DISABLE PDP-' l
SWITCH

‘‘‘‘ .|
TEST

POINTS

|
I

O 12 |

O+5 ';

_____ Jd

Run

DC OK

Hait

Restart

-~ =1

Fixed Disk 0

Write Protect

Ready

|
BERG

CONNECTOR

Removable Disk

Protect

Write

L |

O O
1

MR-9417

Figure 2-14

Control Panel Assembly

The 2-position line time clock (LTC) switch (switch 1) is used to enable or disable the LTC function.
Setting switch 1 on enables the LTC to function under software control. Setting switch 1 to the off position
disables the LTC function. The other 2-position switch (switch 2) is not used.

The remaining control panel switches and indicators are defined in Tables -2 and 1-3.

2-22

2.6.4

Patch and Filter Panel Assembly

The MICRO/PDP-11 system patch and filter panel assembly is located behind the rear plastic cover of
the system unit. (Rack mount units do not have a rear plastic cover over this assembly.) The assembly
provides for the mounting of up to four patch and filter panels, such as those for the CPU (described in
Paragraph 2.2) and the DZV11 asynchronous multiplexer (described in Paragraph 2.4). A removable
division between two of the patch and filter panel spaces allows for the installation of a large panel. The
assembly also provides space to accommodate two 50-pin connectors in the event that the system is
expanded. Metal plates are mounted in unoccupied panel and connector spaces; these can be easily
removed for panel or connector installation. Figure 2-15 shows the patch and filter panel assembly.

REMOVABLE

INSERT

50-PIN CONNECTOR
EXPANSION SLOTS
MR-9529

Figure 2-15

Patch and Filter Panel Assembly

2-23

CHAPTER 3
PROGRAMMING

3.1 INTRODUCTION
The MICRO/PDP-11 system hardware runs several small ROM-based diagnostic programs when the
system is powered up. Depending on the results of this process, you may use the bootstrap function
provided in the hardware to run one of the two types of software used on the MICRO/PDP-11 system.
The first type of software is made up of the system diagnostic programs, which are all included on the
diagnostic diskettes provided with the systems that include the Installation Accessories Box. (Refer to
Table 1-1.) The Installation Accessories Box includes a user test diskette and a set of Field Service test
diskettes. The user test diskette incorporates the DEC/X11 program modules necessary to test the
MICRO/PDP-11 as a system, as well as the appropriate XXDP+ series of diagnostic programs necessary
to test the components of the system. The Field Service test diskettes are a more complex means of testing
the system and require some knowledge of XXDP+ commands.
The second type of software is made up of the operating system. A wide variety of highly functional
operating system software and business application programs is available for use with the MICRO/PDP11 system. Existing PDP-11 system software supported by the MICRO/PDP-11 system includes RT-11,
RSX-11M, RSX11-M-PLUS, Micro/RSTS, and CTS-300.
3.2 HARDWARE-INITIATED DIAGNOSTICS
Each time the MICRO/PDP-11 system is switched on, a series of tests is performed automatically
(provided that switch 1 on the KDF11-BE module is configured as defined in Table 2-2). These tests are
provided by ROMs located on the KDF11-BE (M8189) module. They quickly verify that the
MICRO/PDP-11 system is working properly. A complete listing of the contents of the KDFI11-BE

module’s boot/diagnostic ROMs is available in the CZKDFAO KDF11-BE BOOT ROM listing (ACT577A-MC) or microfiche listing (AH-T578 A-MC). You can run additional, more complete, system tests
by using the diagnostic software.
A successful completion of the hardware-initiated diagnostics results in the following message being
displayed on the console terminal.
KDF11B-BE ROM V0.8
128KW MEMORY
9 STEP MEMORY TEST

STEP123456789
TOTAL MEMORY ERRORS =0
CLOCK ENABLED

3-1

The version number may differ from that listed above to reflect the particular version of the ROMs
installed on the CPU printed circuit board in your system. The second line of the message indicates how
much memory is installed in the system. The message then indicates that a memory test is being
performed, and reports the results of that test. The numbers | through 9 are displayed slowly, one at a
time. as each step of the diagnostic program tests the system memory. The last line of the message
indicates that the line time clock (LTC) is enabled on the system. (To set the LTC switch, refer to
Paragraph 2.6.3.)

If an error occurs, a different message is displayed on the console terminal. (Chapter 5 gives examples of

error printouts and their meanings.)

[f the terminal used is not an ANSI terminal, the console displays 6n twice. (This is only an indication of
the type of terminal being used.) If the terminal is an ANSI hard-copy terminal, it performs two line feed
functions before it proceeds to the next message. Finally, if the terminal is an ANSI video terminal, it
proceeds directly from the message listed above to the next message.

If bootable MSCP media is found on the MICRO/PDP-11 system at this time, the console terminala
displays a message indicating which drive is booting. (This process is described in Paragraph 1.3.5.) If
bootable MSCP medium is not found on the system, an error (such as
Error 16 - not bootable
or

Error 17 - no disk

is reported, and you are given the opportunity to insert a diskette and reboot. (This process is also
described in Paragraph 1.3.5.)

If you choose not to reboot (by responding to the reboot question by typing N and pressing the Return

key), the system displays a list of commands.

[f you are using an ANSI console terminal, the following message is displayed.

128 KW MEMORY

KDF11B-BE ROM V06X

CLOCK ENABLED

MAIN MENU
BOOT
HELP
MAP

DIAGNOSE

Press RETURN to select BOOT

Use cursor controls “UP ARROW” or “DOWN ARROWTM to select function
Use CTRL/W to reset menu

If you are using a non-ANSI terminal and do not wish to reboot, the following message is displayed.
Type ? for HELP

Enter one of [Boot, Diagnose, Help, List, Map]:

3-2

The functions performed by these commands (on both ANSI and non-ANSI terminals) are listed below.
Boot — Loads a program from the selected storage medium.
Help - Prints the list of possible commands and their functions.

Map - Executes the system mapping routine. This routine displays the following information on the
console terminal.

The CPU options installed on the KDF11-BE module.

Extended instruction set (EIS) - standard on the MICRO/PDP-11 system

Commercial instruction set (CIS)

Floating-point instruction set (FIS).

CIS and FIS are microcode options (MOS chips) that may be added to the KDF11-BE module.
2.

The memory starting and ending addresses found on the system. The process of displaying this
information takes about two minutes and can be aborted by entering a CTRL/C.

The range of 1/O page addresses found on the system. The type of device associated with each

address is not identified, however.

Diagnose — Executes an extended memory test. This test is more comprehensive than the one that takes

place automatically whenever the system is powered up. This test, therefore, takes longer to be performed

(approximately 25 minutes for 128 K words of memory).

List (on non-ANSI terminals) — Prints a list of bootable devices present on the system. (This function is

part of the bootstrap command on ANSI terminals.)
3.3

DIAGNOSTIC SOFTWARE

Diagnostic programs determine whether or not the system is working properly; and if it is not, they isolate
the failing component. Diagnostic programs are used exclusively for maintenance purposes and play no
part in normal system operation. The programs are provided on the diagnostic diskettes included in the
Installation Accessories Box. The MICRO/PDP-11 system designations that include the Installation
Accessories Box are indicated in Table 1-1.

The user test diskette provides a convenient means for a user with no backround in diagnostic software
systems to quickly verify that their MICRO/PDP-11 systems are operating properly. This diskette is
included in both the working kit and the master kit portions of the MICRO/PDP-11 system Installation
Accessories Box. The diskette uses a diagnostic software system called DEC/X11. DEC/X11 1s used
primarily to check the reliability of the MICRO/PDP-11 system as a whole. The diskette also utilizes
XXDP+, a software system complete with its own monitor and utility programs, as well as a collection of
diagnostic programs. These programs are designed to test and diagnose the individual components that
make up the MICRO/PDP-11 system. Paragraph 3.3.1 shows examples of how to use the user test
diskette.

Field Service test diskettes are also provided with the MICRO/PDP-11 system. These four diskettes are
provided in the master kit portion of the MICRO/PDP-11 system Installation Accessories Box. The

diskettes provide the complete XXDP+ diagnostic software system. This system includes the standard
X XDP+ monitor and utilities, as well as the elements necessary to build a run-time exerciser. Use of the

Field Service test diskettes requires extensive knowledge of the XXDP+ software system. Chapter 5 gives

information on the use of the Field Service test diskettes as troubleshooting tools.
3-3

User Test Diskette

3.3.1

The user test diskette features a modified version of XXDP+ software that allows you to test the fieldreplaceable units (FRUs) contained in the MICRO/PDP-11 system. This software will perform read-only
testing of the RD51 fixed disk drive and RX50 diskette drive, and will not test options that have been
added to the system. Once the user test diskette has been booted, the following main command menu
appears on the console terminal.

*xx% MMAIN COMMAND MENU **** V2.0 ****
What would you like?
T

TEST your SYSTEM to see if it’s O.K.

INFORMATION on all COMMANDS.

DESCRIPTION of your SYSTEM.

HELP

Please type appropriate letter followed by “RETURN" key:

supplies the following directions.
Directions:

Install a blank diskette in REMOVABLE DISK DRIVE #2.

Make sure that orange arrow on the diskette aligns with the orange bar on the drive.

The DZ test may print many unpredictable characters on any of the other terminals that are
connected to this computer. So, if you do not want these characters to be printed on a certain
terminal, please turn that terminal off now.

DO NOT TURN OFF THIS TERMINAL !

When the above has been completed proceed by typing the “RETURNTM key.

Type “M” to return to MAIN COMMAND MENU or “RETURN?” to proceed:
If you press the Return key, the following message is displayed.
The System Test is now running.

The System Test will run for approximately 10 minutes.

When testing has been completed, results of the test will appear on this terminal. DOTS will be

displayed in a repeating pattern to show testing in progress.
--------

The series of dots is displayed to indicate that the diagnostic software is running. If the test is successfully
completed, the following message appears.

Testing of this system is now complete. No errors have been detected. The system is O.K.

Check your OWNER’S MANUAL Software chapter on how to start User system software.
You are then directed to remove the user test diskette if testing of the system is complete. You may choose
to retest the system by keeping the diskette installed and returning to the main command menu.

However, if an error occurs, a message different from the one above is displayed. Refer to Chapter S for
examples of error printouts and their meanings.

3.3.2 Field Service Test Diskettes
A set of four Field Service test diskettes is provided with the MICRO/PDP-11 system. These diskettes are

intended for use by a technician in order to test and/or troubleshoot the MICRO/PDP-11 system.

The Field Service test diskettes provide the standard XXDP+ diagnostic software system. XXDP+
includes the program modules necessary to build a run-time exerciser for the entire MICRO/PDP-11

system (including options that may have been added to expand it). Independent device diagnostics are also
included with this XXDP+ software system. Chapter 5 gives information on the use of the Field Service
test diskettes as troubleshooting tools.

3.4 OPERATING SYSTEM SOFTWARE
The operating system has two basic functions: it provides services for the development of application
programs, and supplies the necessary environment in which application programs run. Micro/RSX, RSX11M, RSX-11M-PLUS, Micro/RSTS, RT-11 (CTS-300 and MicroPower/PascalTM), VIM-1 1, and DSMI'1 are operating systems that are supported by the MICRO/PDP-11 system. A brief description of each is
given below. You can obtain additional information from the PDPI1 Software Handbook (EB-1868720).
3.4.1
Micro/RSX, RSX-11M, and RSX-11M-PLUS
The Micro/RSX, RSX-11M, and RSX-11M-PLUS operating systems are real-time multiprogramming

and multiuse systems. They are designed to be compact, require little overhead, and can be generated to
run in a variety of hardware and application environments. Applications range from small, dedicated,
laboratory or industrial control systems, to large, multiuser, transaction-processing and information man-

agement systems. The RSX-11M operating system allows the use of high-level languages such as FOR-

TRAN 1V, FORTRAN 77, BASIC 11, BASIC PLUS-2, and COBOL.

3.4.2

Micro/RSTS
Micro/RSTS is an application-only, timesharing operating system. This system does not allow program
development; it runs application programs that have been developed on Digital’s RSTS/E operating

system. The Micro/RSTS operating system is a subset of RSTS/E software, selected specifically for use

on the MICRO/PDP-11 system’s hardware configuration. Therefore, to do an application program for
Micro/RSTS, you must have the larger RSTS/E system to code, compile, link, and debug the program.

3.43

RT-11
RT-11 is a compact operating system designed for real-time, single-user applications. This system supports
the standard Digital Command Language (DCL). The RT-11 operating system is well suited to technical
applications such as laboratory and factory instrument control, manufacturing process control, and similar
tasks. Commercial applications of the RT-11 operating system include word processing, medical record
management, and numerous others.

3-5

3.4.3.1 CTS-300 - CTS-300 is a layered operating system that is supported by the RT-11 operating
system. The CTS-300 operating system provides additional facilities that include terminal handling and
screen formatting, file handling, sort/merge, and print spooling. Programming is done with DIBOL. The
operating system includes the DIBOL language compiler, three run-time systems on which DIBOL
programs may be executed, and a number of utility programs.

3.4.3.2 MicroPower/Pascal - MicroPower/Pascal is a layered operating system that is supported by the
RT-11 operating system. The MicroPower/Pascal operating system includes all the components needed to
create concurrent, real-time application programs on a PDP-11 host system, and execute and debug
applications on PDP-11 (QBus) microcomputer target systems. The application software developed

through the use of the MicroPower/Pascal operating system is selectively combined with a library of
executive service modules, thus eliminating the need for a general-purpose operating system. Pascal
application programs execute standalone and do not run under any of Digital’s operating systems.
3.44

VIM-11

V7IM-11 systems are general-purpose, multiuser, interactive operating systems designed specifically to
make the designer’s, programmer’s, and documenter’s computing environment simple, efficient, flexible,

and productive. VIM-11 is based on Bell Laboratories’ UNIX* timesharing system, version 7, with
enhancements for the MICRO/PDP-11 system. Applications include office automation, electronic mail,
document preparation, data access, data collection, networking, software development, computer-aided
design (CAD)/computer-aided manufacturing (CAM), and billing.
3.4.5

DSM-11

The DSM-11 operating system and DSM-11 programming language run together. (DSM includes
MUMPS.) The MUMPS language is interpretive (each line of code is processed immediately upon being
entered), so there are no compile and assembly steps. This is very useful in the scientific and health
industries, where accessibility and timeliness of information are crucial.

3-6

CHAPTER 4
TERMINAL OPTIONS

4.1

INTRODUCTION

In order to use the MICRO/PDP-11 system, it must be connected to at least one of a variety of console
terminals available. The KDF11-BE module contains a serial line unit that interfaces any of Digital’s

standard terminals via a standard EIA configuration (except for modem control). The selected terminal

can be connected to the KDF11-BE module through the CPU patch and filter panel.
4.2

VT100 SERIES VIDEO TERMINALS
VT100 video display terminals feature a sculptured, typewriter-like, detachable keyboard. The keyboard

attaches to the display unit by means of a 1.9 m (6 ft) coiled cord. A VT100 terminal, shown in Figure 4-1,

operates on a full-duplex, asynchronous communication line, and is equipped with a standard EIA
interface. A comparison of the various models within the VT100 series is shown in Figure 4-2. You can
obtain detailed information on a terminal in the VT100 series by referring to that terminal’s user’s guide.

(

)

-))

e
[[ )

]

(OO

O00000

[00000DvTeo)

=
el

_la O
]

J
MR-3733

Figure 4-1

VT100 Terminal

4-1

VTI00|

EXPANDABLE | GRAPHICSZ | porT3 | FEATURES

e NO LOCAL ECHO
e FULL DUPLEX

OPTIONS

YES

VT125
OPTION

OPTION | ® NATIONAL
POWER CORD

X X2410
80132

® LOCAL ECHO

OPTIONS

80 X 24
132 X 24

STD
e LOCAL ECHO
D
e FULL HALF DUPLEX| ® ADVANCE
OPTION

80 X 24
132 X 10

132X 24
WITH AVO
OPTION]T

vT101

PRINTER | EUROPEAN

EDITING
FEATURES

MODEL|{ COL X LINES | COMMUNICATIONS

e AVO

e NONE

o NATIONAL
CHARACTER
SET OPTION

NATIONAL
® POWER
CORD
e NATIONAL

CHARACTER
SET OPTION

o NATIONAL
POWER CORD

STD

o NATIONAL
CHARACTER

e US AND EUROPEAN | VIDEO
MODEM CONTROLS | ® LINE

SET OPTION

INSERT/DELETE

VT102

e CHARACTER
INSERT/DELETE

e WORD PROCESSING

VARIATION (VT102W)

SUPPORTS DECWORD

e NO LOCAL ECHO
80 X 24
e FULL-DUPLEX
132 X 10
132 X 24 WITH
VT125

AVO OPTION

OPTIONS
® AVO

YES

STD
BIT MAP

e NATIONAL
POWER CORD
o NATIONAL

sTD4

CHARACTER
SET OPTION

® EUROPEAN

MODEM

CONTROLS

HTS (BOLD, BLINK, UNDERLINE, REVERSE),

NOTES:

1. ADVANCED VIDEO OPTION PRO VIDES CHARACTER HIGHLIG

CHARACTER SETS.
ADDITIONAL 10 LINES WITH 132 COLUMN DISPLAY, HOOKS F OR EUROPEAN

2. ALL PRODUCTS HAVE “LINE DRAWING” CHARACTERS AS STANDARD.

ELETE TO THE VT100.

3. AS AN OPTION, THE PRINTER PORT ALSO ADDS LOCAL ECHO, LINE INSERT/DELETE, AND CHARACTER INSERT/D

4 SCREEN COPY IN GRAPHIC MODE ONLY.

MR -9560

Figure 4-2 VT100 Series of Terminals, Comparison Chart
LA120-DA/DECwriter III

4-3, features a contoured, typewriter-like
The LA120-DA freestanding printing terminal, shown in Figure ionally.
uses a nonvolatile memory that
bidirect
keyboard and a 180 char/s dot matrix printer that prints is a version ofIt the
DECwriter III that has no
stores features selected in set-up mode. The LA120-RA of the printing charact
eristics of the LA120
ison
keyboard (it is a receive-only terminal). A compar
can obtain additional
You
4-4.
Figure
in
shown
DECwriter III with those of the LA100 terminals is
).
120-UG
(EK-LA
Guide
User’s
information on the LA120 DECwriter III from the LAI20
4.3

4-2

%lo
o o

OOOOOO
-llooooo '\_00000000

flOooooooooo

MR-3734

Figure 4-3

PRINTING

MODEL|SPEED
CHAR/S

LA120

LA120-DA DECwriter 111

NUMBER

PRINTING

OF COLUMNS

{CHARACTERS|

TYPE

1327

7X7
DOT

180

BI|FONT
DIRECTIONAL
SIZES PRINTING

YES

MATRIX

LA100

240
80

217

9X7
DOT
MATRIX

* NUMBER OF COLUMNS VARIES WITH FONT SIZE.

Figure 4-4

Hardcopy Terminals, Comparison Chart

MR 9561

4.4

LA100 LETTERWRITER 100

The LA100 Letterwriter 100 is a desktop, microprocessor-controlled hard-copy terminal that features a
contoured, typewriter-like keyboard. It is a highly versatile, multimode terminal designed for use with
video workstations anc¢ small business systems. The LA100 Letterwriter 100 is available in a receive-only
version called the LA100 Letterprinter 100. Both LA 100 versions are 240 char/s dot matrix printers that
can produce hard-copy graphics. The LA100 Letterwriter 100 is shown in Figure 4-5. Figure 4-4 compares
the printing characteristics of the LA100 terminals with those of the LA120 DECwriter III.

MR-9562

Figure 4-5

LA100 Letterwriter 100

4-4

CHAPTER 5
SYSTEM REQUIREMENTS AND MAINTENANCE

5.1
INTRODUCTION
The MICRO/PDP-11 system is designed for use in business and light industrial settings. However, the
characteristics of the system’s immediate environment should fall within the limits defined in this chapter.

5.2 ENVIRONMENT
Environment is an important consideration in the installation of any computer system, but it is particularly
crucial for the proper operation of a system with diskette drives. Excess humidity and mechanical shock
are especially harmful. The specifications listed in Table 5-1 should be considered when selecting an
environment for the MICRO/PDP-11 system. Table 5-2 lists the power requirements of the
MICRO/PDP-11 system.

Table 5-1

MICRO/PDP-11 System Environmental Specifications

Conditions

Specifications

Altitude (operating)

2400 m (8000 ft) maximum

Altitude (nonoperating)

12000 m (40000 ft) maximum

Temperature (operating)

15° C to 32° C (59° F to 90° F) nominal; reduce
temperature 1.8° C/1000 m (1° F/1000 ft) above
sea level

Temperature (storage)

—40° C to 60° C (—40° F to 151° F)

Temperature (maximum wet bulb)

25° C(77° F)

Temperature change rate

2° C (36° F) per hour

Dew point

2° C (36° F) minimum

Relative humidity (operating)

20% to 80% (noncondensing)

Relative humidity (nonoperating)

10% to 95% (noncondensing)

5-1

Table 5-2

MICRO/PDP-11 System Power Requirements

AC Input

Specifications*

Line voltage

120V

240 V

Power source phasing

Single

Frequency

60 Hz

50 Hz

Voltage tolerance

88-128 VRMS

176-256 VRMS

Line frequency tolerance

47-63 Hz

Running current (maximum)

4.2 A

275 A

Power consumption (maximum)

320 W

Universal power supply

Switchable for ac input voltage

*Depends on the position of the voltage selector switch.

5.3

SYSTEM TESTS AND ERROR DETECTION

When the system detects a hardware error, the program currently running determines the type of
indication given. Some errors cause the system to halt any type of program, while other errors must be
detected by using the appropriate diagnostic programs. An error message may be a single number or
several words, depending on the program and the type of error. Such messages help in the diagnosis of
hardware failures.

When a program halts, you can use hardware-implemented routines to simulate the conditions under
which the error occurred. You can also halt the program if the system does not do so automatically. In
addition, you can modify the maintenance programs to perform specific checks, or you can chain groups
of programs together to check larger functional areas.
5.3.1

Bootstrap/Diagnostic ROM Programs

Read-only memories (ROMs) located on the KDF11-BE module (which will be from here on referred to as
the M8189 module) contain the bootstrap/diagnostic programs. CZKDFAO KDF11B-BE BOOT ROM
listing (part number AC-T577A-MC) or microfiche listing (part number AH-T578A-MC) contain complete listings of the programs included in the ROMs. These programs are switch-selectable. (Refer to
Chapter 2.) To use these internal diagnostics, switch S1 (E102) on the M8189 module must be positioned
as defined in Table 2-2.

Each time the MICRO/PDP-11 system is switched on or the restart switch is pressed (when the halt
switch/indicator is off), the programs selected by the switches are executed. The system has successfully
completed running these hardware-supplied diagnostics when the following message is displayed on the
terminal.

KDF11B-BE ROM V0.8

128KW MEMORY
9 STEP MEMORY TEST
STEP123456789

TOTAL MEMORY ERRORS =0

CLOCK ENABLED

The system then attempts to find a bootable MSCP medium on the system. If neither of the diskette drives
nor the fixed disk drive is bootable at this time, a message similar to the following is displayed.
ERROR UNIT DUO
ERR 16 NOT BOOTABLE
ERROR UNIT DU2
ERR NOT BOOTABLE
ERROR UNIT DUI1
ERR 16 NOT BOOTABLE
WISH TO REBOOT [Y,(N)]?
Other types of errors may be reported by the boot/diagnostic ROM, as shown in Table 5-3.

Table 5-3

Boot/Diagnostic ROM Error Types

Error

Number

Definition

No memory

Fatal memory fault

Memory fault

04
05

Trap 4

Trap 10

Trap 14

Trap 20

09
10

Trap 30

Trap 34

Nonexistent controller

13
14

Drive not ready
Drive error

Controller error

Not bootable

MMU abort

Power fail

No disk

No tape

19
20
21
22
23

Nonexistent unit
ROM E126 bad
ROM E127 bad
No forced parity
No parity interrupt

If you choose not to reboot (by responding to the reboot question by typing N and pressing the Return
key), the system displays a list of commands.

5-3

If you are using an ANSI console terminal, the following message is displayed.

128 KW MEMORY

KDF11B-BE ROM V06X

CLOCK ENABLED

MAIN MENU
BOOT
HELP
MAP

DIAGNOSE

Press RETURN to select BOOT

Use cursor controls “UP ARROW” or “DOWN ARROW?” to select function
Use CTRL/W to reset menu

If you are using a non-ANSI terminal and do not wish to reboot, the following message is displayed.
Type ? for HELP

Enter one of [Boot, Diagnose, Help, List, Map]:

The functions performed by these commands (on both ANSI and non-ANSI terminals) are listed below.
Boot - Loads a program from the selected medium.

Help - Prints the list of possible commands and their functions.

Map - Executes the system mapping routine. This routine displays the following information on the

console terminal.

2.
3.

The CPU ontions installed on the KDF11-BE module.

Extended instruction set (EIS) that is standard on the MICRO/PDP-11 system

Commercial instruction set (CIS)

Floating-point instruction set (FIS).

CIS and FIS are microcode options (MOS chips) that may be added to the M8189 module.
The memory starting and ending addresses found on the system. The process of displaying this
information takes about two minutes and can be aborted by entering a CTRL/C.

The range of 1/O page addresses found on the system. The type of device associated with each
address is not identified, however.

Diagnose - Executes an extended memory test. This test is more comprehensive than the one that takes

place automatically whenever the system is powered up. This test, therefore, takes longer to be performed

(approximately 25 minutes for 128 K words of memory).

List (on non-ANSI terminals) - Prints a list of bootable devices present on the system. (This function is
part of the bootstrap command on ANSI terminals.)

5-4

If one of the hardware-supplied diagnostic programs fails to function properly, the console terminal may
display an error message that follows the following format.
nnnnnn

@
The nnnnnn defines the address at which the error occurred. The @ sign indicates that the system has
halted and control has passed from the program to console emulator mode, in which the system responds

to on-line debugging technique (ODT) commands. (Appendix B provides a list of basic ODT commands
that may be used at this time.) You can use the nnnnnn address displayed on the console terminal to isolate

the failure. Use the CZKDFAO KDF11B-BE BOOT ROM listing (part number AC-T577A-MC) or
microfiche listing (part number AH-T578A-MC) to find the location of the error halt in the program and
determine the cause. The boot/diagnostic ROM listing also provides scope loop routines that may be used

for troubleshooting purposes.

If the nnnnnn address does not appear, check the diagnostic LEDs on the M8189 module to determine the
failure. Refer to Figure 5-1 and Table 5-4 for the location and definition of the diagnostic LEDs.

NOTE
The display LED pattern indicates that the corresponding test is in progress or has failed. Some tests

retry (switch S1 set to DECnet boot), while others

halt the CPU (switch S1 set to CPU test, memory
test, or non-DECnet boot).

MSD +5V

LSD

SOCKET

——A
D1

E78

)
K4

MR-7372

Figure 5-1

Diagnostic LED Locations

Table 5-4
Display

MSD

LSD

(octal)

Bit 3

Bit 2

LED

Diagnostic LED Error Displays

Bit 0

Type of Error

Bit 1

Off

Boot/diagnostic ROM not executing.

Off

CPU error.

Off

Memory error.

Off

Boot device status error.

Off

Invalid bootstrap block.

Off

DECnet waiting for response from

Off

DECnet processing received message.

Off

MMU error.

Off

Error in first 28 K words of memory

Off

Scope loop.*

Off

Extended memory test error.

Off

MAP function error.

System hung, halt switch on, or switch

Waiting for console terminal XMIT

ready flag.

Waiting for console terminal receiver

done flag.

host.

DECnet

waiting

for

message

completion.

(fatal error).

S1 not configured properly.

Refers to a section of the ROM program accessed by Field Service in order to loop through the ROM program for
troubleshooting purposes. Refer to CZKDFAO KDF11B-BE BOOT ROM listing (part number AC-T577A-MC) or microfiche listing (part number AH-T578A-MC).

5-6

5.3.2 User Test Diskette
When the user test diskette is booted on the system, the following message is displayed.

BOOTING FROM DU1
Loading USER Tests: V2.0 this will take about 5 seconds.

Please wait . .

The unit number specified in the message depends on which drive the user test diskette was booted

from.
The version number of the user test diskette may differ from the one shown above (V2.0). When
the
program is successfully loaded, the following message is displayed.

¥4¥* MAIN COMMAND MENU **#%% y)
( ****
What would you like?
-

]

TEST your SYSTEM to see if it’s O.K.
INFORMATION on all COMMANDS.

DESCRIPTION of your SYSTEM.

(]

HELP

Please type appropriate letter followed by “RETURN” key:

In order to test the system, type T and press the Return key. The system’s user test monitor
then
automatically runs the appropriate DEC/X11 run-time exerciser present on the user test diskette, and
supplies the following directions.
Directions:
Install a blank diskette in REMOVABLE DISK DRIVE 2. Make sure that orange arrow on the
diskette aligns with the orange bar on the drive.

When the above has been completed proceed by typing the “RETURN?” key.
Type “M” to return to MAIN COMMAND MENU or “RETURN?” to proceed:
If you press the Return key, the following message is displayed.
The System Test is now running.

This test will run for approximately 10 minutes. When testing has been completed, results of the test
- will appear on this terminal. DOTS will be displayed in a repeating pattern to show testing in
progress.

5-7

If the test is successfully completed, the following message is displayed.
Testing of this system is now complete.
No errors have been detected.
The system is O.K.

You can now continue by installing new software or running existing software. To install new

software, refer to installation instructions in your software box.

You are then directed to remove the user test diskette if testing of the system is complete. You may choose
to retest the system by keeping the diskette installed and returning to the main command menu.
However, if an error has occurred, the following message is displayed.
An error was detected by the System Test.

An audible signal will be heard from the terminal when the cause has been found.

The user test now automatically runs the individual XXDP+ diagnostic programs for each of the FRUs in
the system. The results of each test are reported one at a time as each test is completed. The following is
displayed in the event of a memory failure.

APPROXIMATE
MINS TO

TEST:

Results

OK
Testing Processor. . .........oovvvnnn.
ERROR
e
L
Testing Memory. . ........... ...
Error detected in Testing Memory

Check Owner’s Manual troubleshooting chapter on how to proceed or please call your Field
Service representative.

What would you like ?

R - RETRY The failing test.
C - CONTINUE with test sequence.

M- Return to the MAIN COMMAND MENU.

Please type appropriate letter followed by “RETURN" key:

If you choose to continue testing, other failing FRUs will be reported.

The user test diskette makes use of the XXDP+ software system to isolate a failing FRU on the
MICRO/PDP-11 system. If it is necessary to use XXDP+ programs to further test or troubleshoot the
system, install the Field Service test diskettes. Use of the Field Service test diskettes as troubleshooting
tools is discussed in Paragraphs 5.5 and 5.6.

5.4

ON-LINE DEBUGGING TECHNIQUE (ODT)

The on-line debugging technique (ODT) is the most basic way you can communicate with the system.
ODT consists of a group of commands and routines for finding error conditions and for simple communication with the system.

5-8

The hardware-implemented ODT commands are a subset of the commands in a larger software-implemented ODT program. The hardware ODT program, which resides on the M8189 module, serves
primarily for hardware-oriented diagnosis of problems. The system’s responses to ODT commands help
trace events occurring in the system.
CAUTION
The hardware ODT can modify programs; therefore,
remove master diskettes before using ODT.

The ODT functions only when the system is in console emulator mode. This mode of operation replaces

the use of switches and indicators on a console panel in communicating directly with the system. You can
type commands on the keyboard, and the system displays responses on the console terminal instead of

lighting indicators on a computer console. The system enters console emulator mode when any of the
following occurs.
1.

The program executes a halt instruction.

The system detects an error.

You press the halt switch on the control panel.

When the system halts the program and enters console emulator mode, it displays the following on the

console terminal.
nnnnnn

The number nnnnnn is the octal location of the next instruction to be executed, and the @ is the ODT
prompt character. At this point you may examine or modify the contents of the system’s registers and
memory by entering ODT commands. A table of basic ODT commands is provided in Appendix B. The

use of ODT commands is explained in the Microcomputers and Memories Handbook (EB-18451-20).
5.5

TROUBLESHOOTING WITH THE DEC/X11 RUN-TIME EXERCISER

The Field Service test diskettes provided in the master kit portion of the MICRO/PDP-11 system test kit
supply you, as a technician, with a means of building a run-time exerciser and using it to troubleshoot the
system. The exerciser consists of a group of program modules. Each module tests a specific component of

the MICRO/PDP-11 system.
When the run-time exerciser detects an error, it displays an error message that describes the circumstances
of the failure. In analyzing the message, first determine what system component was involved in the error.
Then, either run the appropriate XXDP+ diagnostic program or analyze the error message further. Next,
look up the error call in the listing for the specific program module to see what operation was in progress
when the error occurred. Finally, examine the parameters of the failure (program counter, processor status
word, stack pointer, etc.).

You can modify program modules to halt on different errors, provide different status displays, and run
alone or with selected other programs. You can use ODT to examine system registers and memory
locations. Such detailed analysis requires extensive knowledge of DEC/X11 commands and the computer
hardware. Chapters 5 through 9 of the DEC/X11 User’s Manual (AC-F053-MC), and the DEC/X11
Cross-Reference Manual (AC-F055C-MC) explain commands, errors, and techniques. The Microcomputers Interfaces Handbook (EB-20175-20) and Microcomputers and Memories Handbook (EB-18451-

20) describe the system’s hardware, peripherals, and memory options. This manual discusses fault isolation
to the system component level only.

Error Messages

5.5.1

The run-time exerciser provides displays of three basic types of errors: system errors, data errors, and
status errors.

5.5.1.1

System Error Message — The DEC/X11 run-time exerciser displays a system error message

when it detects one of the following.

A bus error trap (to location 4)

A queue overflow

A reserved instruction trap (to location 10)

A system error message can be recognized by the mnemonic SYS ERR. If a system error occurs, run the
program modules individually. If all modules pass when they are run alone, run them in groups until the
failure returns. Refer to Paragraph 5.5.2 for instructions on selecting individual program modules.
5.5.1.2

Data Error Message - The program modules display data errors in the following format.

RQAAO PC XXXXXX APC YYYYYY PASS# NNNNN. ERR# NNNNN. DATA ERROR
CSRA AAAAAA S/B BBBBBB WAS WWWWWW WRADR DDDDDD RDADR
EEEEEE

where:

RQAAO is the name of the failing module (listed as XRQAAO0.OBJ in the directory).
PC XXXXXX is the physical address of the program call that causes the message (program

counter).

APC YYYYYY is the assembled program count of the program call.

PASS# NNNNN. is the pass number (decimal) during which the error occurred.
ERR# NNNNN. is the error count (decimal) for the current run.

CSRA AAAAAA is the address of the control and status register of the failing device.
S/B BBBBBB is the expected data (S/B, or “should be,” data).
WAS WWWWWW is the bad data.

WRADR DDDDDD is the address of the expected data (S/B, or “should be,” data).
RDADR EEEEEE is the address of the bad data.

A data error message is recognized as such because its first line ends with the words DATA ERROR. The
first line starts with the name of the program test module, which can be referenced in the module
abstracts. You can rerun the DEC/X11 modules individually, or run the appropriate XXDP+ program
(refer to Table 5-5). If you need to examine the DEC/XI1 error message further, find the assembled
program count (APC) value in the program listing. The location displayed for the APC contains the
program call that caused the error message.

5-10

Table 5-5

XXDP+ Diagnostic Programs

XXDP+ Program Name

Title

JKDB??.BIC
JKDA??.BIC
JKL577.BIC
VMSAF?.BIN*

F-11 basic instruction test
KDF-11 MMU test
KDF-11B CPU cluster test

BOOT/ROM test
Q-Bus 22-bit address memory test

VMSA?? BIC
VDZA?.BIC
VDZB?? BIC

DZV-11 test; part one
DZV-11 test; part two
DZV-11 loopback test

VDZC?.BIC
ZRQA? BIN

RD/RX performance exerciser
RD-51 formatter program

ZRQB??.BIN

*Revision of VM8A?? must be version FO or later.

5.5.1.3 Status Error Message - This message is in the same general
format as the data error message. It
can be recognized as a status error message by the absence of the terms
SYS ERR or DATA ERROR in
its first line. This message does not contain the S/B (“should be””) or
WAS messages, but instead, includes
a STATC value. This value is the contents of the status register of the
failing device. Like a data error, a

status error can be traced to a listing by looking up the location

given for the APC.

5.5.2

Selecting and Deselecting Program Modules
When troubleshooting the MICRO/PDP-11 system, you may find
it useful to delete a failing program
module or delete all modules except the one or two that are failing. You
can accomplish this by using the
select and deselect commands. You can deselect program modules one
at a time, or deselect all modules
and then select only those desired. The commands function as follows.

Command

Function

SEL<CR>

Selects all modules for execution.

SEL RQAAO0<CR>

Selects only the RQAAO program module. The program

name must be typed as it appears in the listing.

.DES<CR>

Deselects all modules.

.DES RQAA0<CR>

Deselects only the RQAAO module.

NOTE
The select and deselect commands operate only
within the system exerciser program. They cannot
be executed without first starting the exerciser.

You can obtain the status of a module (selected or deselected) by using
the map command. This command
instructs the monitor program to display a list of the resident modules
with their starting addresses and

status. For example:

.MAP<CR>

CPAFO AT 017752 STAT 040020
CPBGO AT 021502 STAT 040020
RQAAO AT 023242 STAT 150000

module is
STAT (status) message indicates wheth6,eroror7,notthea modul
The second most significant octal digitorof3,the
e is
5,
4,
a
is
the module s deselected: if it
selected. If the number is a 0, 1, 2, ete numbe
l
Manua
User's
I11
DEC/X
the
of
r are given in Chapter 5
selected. Bit definitions for the compl I11 Cross
-MC).
O055C
-Reference Manual (AC-F
(AC-F053-MC) and aiso0 in the DEC/X

Expanding the Run-Time Exerciser

expand the system,
ed for that system'’s configuration. If yourebuil
Each system has a run-time exerciser design
d the exerciser
must
You
.
you must rebuild the exerciser in order to test the added components

5.5.3

Rebuilding involves selecting the
it is an interactive system of programs.with
rather than just add to it because the
ng program modules
new hardware and including them 053-MtheC)existi
program modules appropriate to DEC/
DEC/XI1 Crossand
XII User's Manual (AC-F
in a new exerciser. Refer to the for detail
rebuilding and the
in
ed
involv
ed explanations of the steps
Reference Manual (AC-F055C-MC)
s.
possible error messages that may appear during the proces

+ DIAGNOSTIC PROGRAMS
5.6 TROUBLESHOOTING WITH THE XXDP
master kit portion of the MICRO/PDP-11 system test kit

ed in the
The Field Service test diskettes provid
system through the
of troubleshooting the MICRO/PDP-11
means
a
with
supply you, as the technician,
programs that are
stic
diagno
+
These diskettes include the XXDP system. Some
use of XXDP+ diagnostic programs.l config
of these proP-11
uration of the MICRO/PD
recommended for testing the typica
grams are listed in Table 5-5.

are also provided on the diskettes as a means of testing
Other XXDP+ diagnostic programsP-11
system.

options that

have been added to the MICRO/PD

g the function of the selected
m helps to isolate failures by testin
The XXDP+ diagnostic software syste
basis.
ail
pass/f
a
field-replaceable unit (FRU). The result of a test is reported on
functions within the general functis onal
be modified to perform specificcarefu
These diagnostic programs can the
l study of the program listing and
programs requires
areas they test. Modification of alX XDP+
manual describes the commands
user’s
348A-MC). This
the XXDP+/SUPR User’s Manu +(AC-F
ic program modifications and
specif
available under the various XXDP utility programs, listing
procedures.

The following paragraphs describe some of the more common operations.

es. The large number of
not use a universal format for error messag
The XXDP+ diagnostic programs do
ts display several octal words, givingof
of formats necessary. Most formawhat
parameters tested makes a varietyerror
occurred. Since the meanings
ting
a mnemonic indica
the parameters at the time of the m-specand
the tables or error directories of
in
nced
refere
ific, they must be
these mnemonics are usually progra
5.6.1

Error Messages

individual program listings.

pass, and/or halt (or loop)
to run continuously, halt at the end of. aYou
Diagnostic programs can be configured
can then enter ODT
a program by pressing the halt switch
on selected errors. You can halt progr
am by typing the restart address given in the program listing. For
commands or restart the diagnostic

5.6.2

Restarting Programs

example:

@200G

am, you
the memory locations of the XXDP+ monitor progr
If the diagnostic program has not overwritten addres
s that was displayed in the monitor heading when the

can restart the monitor by typing the restart
program did overwrite the memory locations, the diskette must be
diskette was booted. If the diagnosticmonit
or.
rebooted to return to the XXDP+

5-12

5.6.3

Modifying a Diagnostic Program
Diagnostic programs can be modified to perform specialized diagnosti

listings explain what to modify for each purpose. The modification

c functions. The individual program
process requires the use of the ODT

commands to change the contents of certain locations. For
example, assume the memory exerciser
program must be changed to perform a loop on error. The program
listing directs you to change software

switch register 176 to 1000. To do so, use the following steps.
.

Load the program with the L command instead of the R command

.L VMSA??<CR>
The system loads the program into memory and displays the . (period)
program is not executed at this time.

prompt character. The

Press the halt switch on the control panel. This places the system in
console emulator mode and
gives control to the ODT program. The system responds by displayin
g the @ prompt character.

Open location 176 by typing 176 and pressing the / (slash) key.
The system responds by
displaying the present contents of that location.
@176,/000000

After the zeros displayed by the system, type the number specified

by the program listing.

@176/000000 1000<CR>
@

Verify that the change has been made by typing 176/ again and examinin
g what is displayed. If
the contents are correct, press the Return key.

@176/001000<CR>
@

Start the program at location 200 with the ODT g0 command.

@200G
7.

The system displays the program name and executes the program.
When testing is complete,
the system displays END PASS and starts another pass.

To terminate the program, press the halt switch. This returns control
return to the XXDP+ monitor program, press the halt switch

up position), and press the Restart key.

to the ODT program. To

again (so that it goes back to its

Modifying the program by this method affects only the system’s memory;
it does not change the program
on the diskette. Therefore, it is not necessary to restore the contents
of the location after the program is
completed.

The basic ODT commands are listed in Appendix B of this manual. Additional information pertainin

ODT is available in the Microcomputers and Memories Handboo

k (EB-18451-20).

5.7

g to

TROUBLESHOOTING PROCEDURES
In order to isolate a failing FRU in the MICRO/PDP-11 system,
follow the recommended procedure
described in Figure 5-2 (Sheets 1 and 2).

5-13

IS MACHINE
OPERATIVE?
CAN CUSTOMER RUN
HIS SOFTWARE?
pe

HAVE CUSTOMER
RUN SYSTEM ERROR

LOG (AVAILABLE FOR

RT, RSTS, RSX) TO
GET A LIST OF ERRORS

DOES
TERMINAL
DISPLAY
LFATAL ERROR...

CHECK:

A/C WALL SOCKET

GET A

A/C LINE CORD

LIST OF
ERRORS

A/C CIRCUIT BREAKER

POWER

ON POWER SUPPLY
A/C POWER SWITCH

SWITCH

LOOK ON CPU MODULE
(M8189) FOR ERROR
NO | NUMBER IN LEDS. ALSO,

SUSPECT CPU PATCH AND
FILTER PANEL TERMINAL
CABLE

ISOLATETO A

SUBSYSTEM, REPAIR
AND RETEST

FANS

TURNING

SUSPECT BAD H7864
POWER SUPPLY. REMOVE

REPLACE CPU OR
MEMORY BASED UPON
HALT ADDRESS AND
LED ERROR CODE

L_AND REPLACE H7864.

vI-G

RESTART SYSTEM

CHECK +5 AND +12 V OUTPUTS
+5 RANGE +4.88 TO +5.13 V
+12 V RANGE +11.7 TO +123 V

(80 mV RIPPLE FEAK-TO-PEAK)

ES
VOLTAG
oK

LINE TIME CLOCK SIGNAL AND TEST

BEVENT (L), DC OK AND
P OK ARE POWER SUPPLY

OUTPUTS

REPLACE H7864

~~| POWER SUPPLY

CHECK IF AN EXPANDER BOX

IS USED THAT BOX IS POWERED ON

—
TURN POWER OFF

YES

REMOVE ALL MODULES EXCEPT CPU

AND MEMORY — TURN POWER ON

CHECK BUS SIGNAL

DC OK FOR CORRECT
LOGIC LEVEL
NO

REPLACE H7864

POWER SUPPLY

DIz OK

YES

BAD DC OK

LED ON FRONT

Figure 5-2

INSERT MODULES ONE
AT A TIME NOTING WHICH

ONE CAUSES DC OK TO DROP
REPLACE MODULE AND RETEST

Troubleshooting Flowchart (Sheet 1 of 2)

10270

CAN

TERMINAL

YOU

YES

HAVE

LOAD XXDP+

PROPER

DISPLAY,

LOAD AND RUN
DEC/X11 TO ISOLATE

YES

FROM

{CORRECT MEMORY SIZE IS

FAILING SUBSYSTEM

RX50

| NDICATED AND CLOCK ENABLED

ARE ANY
OF THE VALID

DOES THE

TERMINAL DISPLA

ERROR MESSAGES

PROPER MESSAGE

YES | Donn e

OISPLAYED ON THE

ONE

o/ MEMORY/

TRY TO BOOT

OF THE

FROM OTHER

ERRORS

TERMINAL

FRU —
FIELD —

RX50, THEN

LISTED*

REPLACEABLE

SWAP MEDIA

UNIT
YES

CHECK BASIC SYSTEM CONFIGURATION

(MODULE
JUMPERS, SWITCH SETTINGS, ETC)
(Moms

DATA
ERROR - SUSPECT BAD MEDIA HE
DRIVE ERROR — SUSPECT

T EMORY MODULE

CONTROLLER ERROR — SUSPECT BAD M8638 THEN BAD RX50 AFTER

T Maoaa e LLER

CHECKING M8659 CONTROLLER LEDS

BAD

RX50

THEN BAD

M8639
CONTROLLER
M8638
CONTROLL
RUN INDiVIDUAL

SI-G

I E%ETS(S) ARt l

REPLACE SUSPECTED FRU AND RESTART

.
<

* DOES THE “FAIL TO

PRINTOUT

GARBLED
B

BOOT" MESSAGE

TERMINAL

YES

AND
ON-LINE
CONNECTED

REMOVE/REPLACE

CPU M8189

INDICATE ONE OF THE

FOLLOWING ERRORS

1 DATA ERROR

2 DRIVE ERROR
Tes

CONTROLLER

DIAGS FOR 3 PASSES

EACH SUBUNIT:
- CPU
- MEMORY
- DzZv-11
— RD/RX SUBSYSTEM
— OTHER OPTIONS

REMOVE/REPAIR/

RETEST AND
RETURN SYSTEM

ERROR

TO CUSTOMER

CHECK BAUD RATE

ON TERMINAL AND
KDF11-B PATCH PANE L

CONNECT TERMINAL

AND RETEST

SET TERMINAL

SO T MATCHES
CPU BAUD RATE

'
PRESS RESTART —

REMOVE/REPLACE/TEST

GO TO START

— TERMINAL

— CPU MODULE mM8189

— CPU PATCH PANEL
— TERMINAL CABLE

?
PRESS RESTART —

GO TO START
MR.10271

Figure 5-2

Troubleshooting Flowchart (Sheet 2 of 2)

5.8

CORRECTIVE MAINTENANCE

in Figure 5-3.
The location of each field-replaceable unit (FRU) in the MICRO/P DP-11 system is shown
in Table
defined
is
FRUs
The recommended repair procedure for each of the MICRO/PDP- 11 system’s
5-6.

NOTE

The removal and replacement procedures in the following paragraphs often refer to the front and rear
plastic covers of the MICRO/PDP-11 system. Note

that the rack mount package does not have a rear
plastic cover.

PATCH AND FILTER
PANEL ASSEMBLY

I
o

KDF11 MODULE
(M8189)

|
A\
OPTIONAL PANELS

OPTIONAL CONNECTORS

(M8067)

DZV11

L—-—]

gL
(M7957)

POWER
SUPPLY

MODULE(S)

FAN

AC IN

r—"":‘\

{M8639)
dl

BACKPLANE
ASSEMBLY

CeQ

AIR DIRECTION

CONTROL PANEL

L\E__r
RD51

R/W BOARD

Figure 5-3

RX50

RD51

MICRO/PDP-11 System FRUs, Expanded View
5-16

MR-9542

Table 5-6

Recommended Repair Procedures for
MICRO/PDP-11 System FRUs

FRU

KDF11-BE

Repair Procedure

Order
Part Number

Replace module. (If replaced

KDF-11BE

with a KDF11-BE, the ROMs
from the original module

must be installed on the
replacement module.)
MSV11-PK

Replace module.

M8067-KX*

DZV11-A

Replace module.

M7957

RQDXI controller

Replace module.

M8639

RQDXI1 signal

Replace cable.

BC02D-1D

H7864 power supply

Replace unit.

30-20444-01

System unit dc fans

Replace fan.

12-17556-01

DC fan power cable

Replace cable.

70-20449-0OD

Diskette drive

Replace diskette drive.

RX50-AA

RX50-AA signal cable

Replace cable.

17-00285-02

RX/RD power cable

Replace cable.

70-20435-1K

Replace drive. You may wish

RDS5I1-A

distribution cable

Fixed disk drive

to replace the read/write
board first, if you have
a spare.

RDS51-A read/write

Replace module.

29-24665-00

Replace shunt.

29-24115

Replace cable.

17-00282-00

Replace cable.

17-00286-00

printed circuit

board
DIP shunt for RD51-A
read/write printed
circuit board

RD51-A signal cable
(20-conductor)

RDS51-A signal cable
(34-conductor)

*The -KX suffix means any suffix from -KA through -KG.

5-17

Table 5-6

Recommended Repair Procedures for

MICRO/PDP-11 System FRUs (Cont)

Order

FRU

Repair Procedure

Part Number

Control panel

Replace control panel.

54-15610

Control panel cable

Replace cable.

70-20451-1C

AC power cable
(includes on/off

Replace cable.

70-20434-01

Patch and filter
panel assembly

Replace assembly.

70-19979-00

CPU patch and
filter panel

Replace patch and filter panel.

54-15422

CPU patch and
filter panel cable

Replace cable.

70-19933-1C

DZV11 patch and

Replace patch and filter

54-15420

switch)

filter panel

panel.

DZV11 patch and
filter panel cable

Replace cable.

BCOSL-01

Backplane assembly

Replace backplane assembly.

70-19986-00

Backplane dc
power cable

Replace cable.

70-20450-01

X suffix means any suffix from -KA through -KG.
*The -K

KDF11-BP Central Processing Unit Assembly Removal and Replacement Procedure

5.8.1

Use the following procedure to remove and replace the KDF11-BE central processing unit (M8189)
module.
].

Make sure no dc power is applied to the backplane when removing or inserting the module.
Remove the rear plastic cover from the system unit by holding each end of the cover and pulling
it off.

Open the patch and filter panel assembly by loosening the two (captive) screws on the assembly.
Swing open the assembly to allow access to the modules installed in the backplane.
Disconnect the cable connecting the M8189 module to the CPU patch and filter panel at the
MS8189 module end. Remove the M8189 module from the chassis.

Make sure the configuration of jumpers and switches on the replacement module is as listed in
Tables 2-1 and 2-2. (If the replacement module is a KDF11-BA, it will not come with the
correct switch/jumper settings.)

5-18

If the replacement module is a KDF11-BA (does not have ROM part numbers 23-157E4 and
23-158E4 installed), install the boot/diagnostic ROMs from the original M8189 module on the

replacement module. Failure to do so will cause a failure of the module to respond as a KDF11BE in the MICRO/PDP-11 system. If the replacement module is a KDF11-BE, the correct

ROMs will be present.
7.

Install the replacement module by reversing steps 2 through 4.

CPU Patch and Filter Panel Removal and Replacement Procedure
Use the following procedure to remove and replace the CPU patch and filter panel.
1.

Make sure the ac power cord is unplugged.

Remove the rear plastic cover from the system unit by holding each end of the cover and pulling
it off.
Disconnect the EIA cable(s) attached to the CPU patch and filter panel. Note their original

positions.

Open the patch and filter panel assembly by loosening the two (captive) screws on the assembly
and swinging the panel open.
Disconnect the cable connecting the M8189 module to the CPU patch and filter panel at the

panel end.

Remove the four screws that hold the CPU patch and filter panel to the patch and filter panel

assembly.

Install the replacement patch and filter panel by reversing steps 2 through 6.

NOTE
Make sure that the baud rate rotary switches are
properly set before connecting terminal(s) to the
panel. (Refer to Figure 2-2 and Table 2-4.)

5.8.2

MSV11-PK (M8067) Memory Module Removal and Replacement Procedure
Use the following procedure to remove and replace the M8067 memory module.
1.

Make sure no dc power is applied to the backplane when removing or inserting the module.

Remove the rear plastic cover from the system unit by holding each end of the cover and pulling

it off.

Open the patch and filter panel assembly by loosening the two (captive) screws on the assembly.
Swing open the assembly to allow access to the modules installed in the backplane.
Remove the M8067 module from the chassis.
Make sure the configuration of jumpers and switches on the replacement module is as listed in
Table 2-5. If an additional memory module is being installed to expand the system, refer to

Tables 6-2, 6-3, and 6-4 for the jumper configuration. (Any more additional memory modules
added to the system should be installed adjacent to this memory module. That is, all memory
modules should be in sequential slots following the CPU module.)

5-19

Install the replacement module by reversing steps 2 through 4.

Check the memory’s operation by running memory diagnostic VSMA??.BIC.
DZV11-CP Asynchronous Multiplexer Removal and Replacement Procedure

5.8.3

Use the following procedure to remove and replace the DZV11-A (M7957) module.
1.

Make sure no dc power is applied to the backplane when removing or inserting the module.
Remove the rear plastic cover from the system unit by holding each end of the cover and pulling
it off.

Open the patch and filter panel assembly by loosening the two (captive) screws on the assembly.
Swing open the assembly to allow access to the modules installed in the backplane.

Partially remove the M7957 module by sliding it out of the backplane. Disconnect the cable

attached to the module. Remove the module from the chassis.

Make sure the configuration of jumpers and switches on the replacement module is as listed in

Tables 2-6 and 2-7.

NOTE

If the module uses nonstandard addresses, configure
the jumpers and switches on the replacement module
according to those on the removed module.
6.

Install the replacement module by reversing steps 2 through 4.

DZV11 Patch and Filter Panel Removal and Replacement Procedure

Use the following procedure to remove and replace the DZV 1 patch and filter panel.
l.

Make sure the ac power cord is unplugged.

Remove the rear plastic cover from the system unit by holding each end of the cover and pulling
it off.

Disconnect the EIA cable(s) attached to the DZV11 patch and filter panel. Note their original

positions.

Open the patch and filter panel assembly by loosening the two (captive) screws on the assembly
and swinging the panel open.

Disconnect the cable connecting the M7957 module to the DZV11 patch and filter panel at the
.

panel end.

Remove the four screws that hold the DZV11 patch and filter panel to the patch and filter

panel assembly.

Install the replacement patch and filter panel by reversing steps 2 through 6.
NOTE

Make sure that the arrow on the DZV11 patch and
filter panel points away from the 50-pin connector
panels.

5-20

5.8.4 RQDX1 (M8639) Module Removal and Replacement Procedure
Use the following procedure to remove and replace the M8639 module.
1.

Make sure no dc power is applied to the backplane when removing or inserting the module.

Remove the rear plastic cover from the system unit by holding each end of the cover and pulling
it off.

Open the patch and filter panel assembly by loosening the two (captive) screws on the assembly.
Swing open the assembly to allow access to the modules installed in the backplane.
Partially remove the M8639 module by sliding it out of the backplane. Disconnect the 50conductor cable from the module. Remove the module from the chassis.

Make sure the configuration of jumpers and switches on the replacement module is as listed in
Table 2-8.

Install the replacement module by reversing steps 2 through 4. The M8639 module is typically
installed in the last occupied slot of the backplane. If empty slots are left between the other
modules and the M8639 module, install grant cards in those empty slots to accommodate the
interrupt and direct memory access structure of the backplane.
5.8.5 RDS5I1-A Fixed Disk Drive Removal and Replacement Procedure
Use the following procedure to remove and replace the RD51-A fixed disk drive.
CAUTION
Use extreme caution when handling the RDS1-A
fixed disk drive. Sudden physical shocks to the drive
(such as dropping it onto a hard surface) will destroy
it.

Make sure the ac power cord is unplugged.

Remove the front plastic cover by holding each end of the cover and pulling it off.
Remove the rear plastic cover by holding each end of the cover and pulling it off.
Remove the front chassis retaining bracket by removing the four screws that hold it to the
plastic case.

NOTE

Before sliding the chassis forward (step 5), be sure
there is enough slack in the cables in the back of the
unit.

5-21

Slide the chassis forward, as shown in Figure 5-4, until all the front top cover screws are
accessible.

N
L~

Figure 5-4

Front Top Cover Access

MR-10272

Remove the front top sheet metal cover from the chassis.
WARNING

When sliding the fixed disk drive forward (step 7),
do not hold the drive by its front right side. Doing so
will cause the head positioner flag to rotate, resulting in damage to the drive.

Find the release tab at the front of the fixed disk drive. Push down on the release tab and slide

the drive forward about 5 cm (2 in), as shown in Figure 5-5. This provides access to the cables.

RELEASE

TAB

Figure 5-5

RDS51-A Fixed Disk Drive Release Tab
5-22

MR-9433

Disconnect the two signal cables from the fixed disk drive by pulling their connectors away
from the drive, as shown in Figure 5-6.

MR-9406

Figure 5-6

RDS5I1-A Fixed Disk Drive Signal Cabling Removal

Disconnect the dc power cable from the rear of the fixed disk drive. The connector can be
pulled straight up, as shown in Figure 5-7.

MR 9434

Figure 5-7

RDS5I1-A Fixed Disk Drive Power Cable Removal

5-23

WARNING

When sliding the fixed disk drive out of the chassis
(step 10), do not hold the drive by its front right side.
Doing so will cause the head positioner flag to
rotate, resulting in damage to the drive.
10.

Remove the fixed disk drive by sliding it out of the chassis, as shown in Figure 5-8.
HEAD POSITIONER FLAG
DO NOT TOUCH!

L
MR 9976

Figure 5-8

RDS51-A Fixed Disk Drive Removal

Install the replacement fixed disk drive by reversing steps 2 through 10. Make sure the DIP
shunt located on the read/write board of the replacement drive is properly configured (refer to
Table 5-7). Refer to Paragraph 5.8.5.2 to format the replacement RD51-A fixed disk drive.
1
1
1
1
N mas emman ot £
ant D
before it1 can be used.
drive
disk
S1-A fixed
the replacemen
You must format+ +h
[

NOTE

Use the replacement fixed disk drive’s shipping carton to package the drive to be returned. If the carton
is not available, one may be ordered (part number
99-90045-01).

5-24

Table 5-7

Read/Write Printed Circuit

Board Jumper Configuration
Pin Numbers

Pin Connection

1tol6

Not used*

2to 15

3to 14

4 to 13

5t012

Out

6toll

7 to 10

Out

8t09

Out

* The 14-pin DIP jumper pack is offset into a 16-pin socket
toward the contact pins on the read/write printed circuit
board. If the DIP shunt (jumpers) needs to be replaced, a
new DIP shunt can be ordered (part number 29-24115).

5.8.5.1
RDS51-A Fixed Disk Drive Read/Write Printed Circuit Board Removal and Replacement Procedure — Although the RD51-A fixed disk drive is itself a field-replaceable unit (FRU), the read/write
printed circuit board may be replaced if it is the cause of a failure. This board (part number 29-24665-00)
is the only part of the drive that may be replaced. Use the following procedure to remove and replace the
read/write printed circuit board. Note that this procedure is recommended for Field Service use only.
1.

Now that the RD51-A fixed disk drive has been removed from the mounting box, remove the
four Phillips screws holding the drive skid plate to the drive. Remove the drive skid plate, as
shown in Figure 5-9.

MR-9410

Figure 5-9

RDSI-A Fixed Disk Drive Skid Plate Removal

5-25

Using a 3/32-inch allen wrench, remove the four screws that hold the read/write printed circuit

board to the fixed disk drive, as shown in Figure 5-10.

Figure 5-10

RD51-A Fixed Disk Drive Read/Write Printed
Circuit Board Screw Removal

Disconnect connector P5 located on the side of the read/write printed circuit board, as shown in
Figure 5-11.

MR-9412

Figure 5-11

RDS51-A Fixed Disk Drive Connector P5 Removal

5-26

Disconnect connectors P8, P7, and P6 located on the front of the read/write printed circuit
board, as shown in Figure 5-12.

Figure 5-12

RDS51-A Fixed Disk Drive Connectors
P8, P7, and P6 Removal

Disconnect connector P4, as shown in Figure 5-13. P4 is a 2-wire connector located on the rear
of the read/write printed circuit board and near the dc power connector.

MR-9414

Figure 5-13

RDS51-A Fixed Disk Drive Connector P4 Removal

5-27

Remove the fixed disk drive read/write printed circuit board, as shown in Figure 5-14.

MR.g415

Figure 5-14 RDS51-A Fixed Disk Drive Read/Write Printed Circuit
Board Removal

ement printed circuit board is as listed in
Make sure the configuration of jumpers on the replac
through 6.

Replace the fixed disk drive by reversing steps 2 through 10 of the procedure in Paragraph

Table 5-7. Replace the board by reversing steps 1
5.8.5.

Field Service test diskettes provide the
5.8.5.2 RD51-A Fixed Disk Drive Formatting Procedure e_The
XXDP+ program necessary to format the drive. In respons to the . (period) prompt, type R ZRQB??
.R ZRQB?? <CR>

(The question marks will allow any revision of the program to be used.) A response similar to the followi
appears on the terminal.
DRSDO

ZRQAXX-X-X

RD51 FORMAT PROGRAM

(where X is the current revision information)

UNIT IS RD51
DR>
DRSDO
RDRX -A-0

RD51 DISK FORMATTER

UNIT IS RQDX1 DISK DRIVE SUBSYSTEM
RSTRT ADR 147670

You must respond to this prompt with a command to run the program, for example:
DR>STA

(to cause the program to run one pass)

5-28

You are then asked the following.
CHANGE HW (L) ? N

CHANGE SW (L) ? N
ENTER UNIT TO BE FORMATTED (D) ? 0
USE EXISTING BAD BLOCK INFORMATION ? N
USE DOWN LINE LOAD (L)

N? N

CONTINUE IF BAD BLOCK INFORMATION IS INACCURATE (L)

N? Y

ENTER 8 CHARACTER SERIAL NUMBER (A) ? ########
ENTER DATE IN MM-DD-YY FORMAT (A) ? 02-19-83
As shown above, the response to most questions is no. The unit number must be specified as 0, and the

current date should be entered.
The format routine takes approximately 11 minutes to complete, and its successful completion results in a
message similar to the following.

FORMAT COMPLETED
If the formatting process is not successful, an error message appears on the terminal. Refer to the
individual program listing to use this message (if necessary) to isolate the failure or to determine which
FRU to replace.
5.8.6

RXS50-AA Diskette Drive Removal and Replacement Procedure
Use the following procedure to remove and replace the RX50-AA diskette drive.
1.

Make sure the ac power cord is unplugged.

NOTE

Before sliding the chassis forward (step 5), be sure
there is enough slack in the cables in the back of the
unit.

5-29

Slide the chassis forward, as shown in Figure 5-15, until all the front top cover screws are
accessible.

Figure 5-15 Front Top Cover Access
6.

MAToz72

Remove the front top sheet metal cover from the chassis.

drive. Disconnect the
Disconnect the signal cable and the dc power cable from the diskette
5-16.
Figure
in

cables by pulling straight up on each cable’s connector, as shown

Figure 5-16

RX50-AA Diskette Drive Signal and
Power Cable Removal

5-30

MR-9437

Find the release tab at the front of the diskette drive, as shown in Figure
5-17. Push down on the
release tab and slide the diskette drive forward out of the chassis as
shown in Figure 5-18.

RELEASE

TAB

RXS50-AA Diskette Drive Release Tab

MR-9436

7
7 4

SIS
L,

L4004

Figure 5-17

Figure 5-18

RX50-AA Diskette Drive Removal

MR-9438

Install the replacement RX50-AA diskette drive by reversing steps 2 through 8.
NOTE
Remove the cardboard shipping insert from the
replacement RXS50-AA diskette drive after installing
the signal and power cables. Be sure to install the

cardboard shipping insert into the diskette drive that

was removed.

5-31

5.8.7 H7864 Power Supply Removal and Replacement Procedure

Use the following procedure to remove and replace the H7864 power supply.
NOTE

The power supply is a complete field-replaceable
unit (FRU). It is not adjustable and does not contain
replaceable printed circuit boards. The +5 Vdc and
+12 Vdc power regulators are fixed and, therefore,
not adjustable. Voltage tolerances are +4.875 Vdc
to +5.125 Vdc for the +5 Vdc regulator, and +11.7
Vde to +12.3 Vdc for the +12 Vdc regulator. Ripple
is 50 mV peak-to-peak at +5 Vdc, and 75 mV peakto-peak at +12 Vdc.

Make sure the ac power cord is unplugged.

Remove the front plastic cover by holding each end of the cover and pulling it off.
Remove the rear plastic cover by holding each end of the cover and pulling it off.
Disconnect the ac power cord (connector J12) located at the rear of the power supply. Refer to
Figure 5-19.

If a remote power controller is used, disconnect the remote power controller cable located at the
rear of the power supply. Refer to Figure 5-19.

CIRCUIT
BREAKER

VOLTAGE
SELECTOR]

SWITCH

‘O/

INPUT

(o)

REAR VIEW

\\\\~REMOTE
POWER

CONNECTOR
MR-9535

Figure 5-19

H7864 Power Supply (Rear View)

Remove all cables connected to the patch and filter panel assembly. Note their original

positions.

Remove the rear chassis retaining bracket by removing the four screws that hold it to the plastic
case.

Slide the chassis out of the plastic case.

Open the patch and filter panel assembly by loosening the two (captive) screws on the assembly.
Remove the front top sheet metal cover from the chassis.
5-32

11.

Remove the 18-pin system backplane power connector (connector J9) from the power supply.
This connector is located on the top front of the power supply, as shown in Figure 5-20.
TO

POWER

—

FRONT

FAN

SWITCH ~

(000 0p]

(J7)

0000 =000

QUL
FRONT VIEW
MR-9534

Figure 5-20

12.

H7864 Power Supply (Front View)

Disconnect the 9-pin mass storage power connector (connector J8) from the power supply. This
connector is located to the right of the 18-pin system backplane power connector.
Disconnect the 4-prong in-line fan power connector (connector J10). Figure 5-20 shows its
location on the front of the power supply.

14.

Disconnect the 6-prong ac power switch connector (connector J7), also located on the front of
the power supply, as shown in Figure 5-20.

15.

Remove the five Phillips screws that hold the power supply to the chassis.

Carefully lift the power supply assembly out of the chassis and rest it on top of the rear top
sheet metal cover. The side view of the power supply is shown in Figure 5-21.

MR.9536

Figure 5-21

H7864 Power Supply (Side View)

5-33

17.

Disconnect the power connector from the fan.

18.

Install a new power supply by reversing steps 2 through 17.
NOTE

Be sure the voltage selector switch (shown in Figure
5-19) is set correctly for local requirements. (The
number displayed on the switch is the voltage
selected.)

5.8.7.1 System Unit Front Fan Removal and Replacement Procedure - Use the following procedure to
remove and replace the front fan.

NOTE

The fans (part number 12-17556-01) in the
MICRO/PDP-11 system are identical. However,
their locations and connections to the power supply
cause them to run at different speeds.
Make sure the ac power cord is unplugged.

Remove the front plastic cover by holding each end of the cover and pulling it off.
Remove the rear plastic cover by holding each end of the cover and pulling it off.

Remove the front chassis retaining bracket by removing the four screws that hold it to the
plastic case.

NOTE

Before sliding the chassis forward (step 5), be sure
there is enough slack in the cables in the back of the

Slide the chassis forward until all the front top cover screws are accessible.
Remove the front top sheet metal cover from the chassis.

Remove the RX50-AA diskette drive as described in Paragraph 5.8.6.
Disconnect the power cord from the fan.

Remove the four screws that hold the fan to the chassis.
10.

11.

Remove the fan.

Remove the fan guard from the intake side of the removed fan and install the guard on the
replacement fan. Install the replacement fan by reversing steps 2 through 10, making sure that
the outside fan guard is located between the fan and the chassis. Also, make sure the direction
of airflow is away from the fixed disk drive and diskette drive, and that the power connector is
positioned so it is closest to the bottom of the power supply.

5-34

CAUTION
When replacing the dc fan power cable, observe the
polarity of the connector because it is not keyed.
The curve of the cable connector must match the
curve of the fan housing, as shown in Figure 5-22.

MR-10269

Figure 5-22

5.8.7.2

Fan Power Cable Connection

System Unit Rear Fan Removal and Replacement Procedure - Use the following procedure to

remove and replace the rear fan.
NOTE

The fans (part number 12-17556-01) in the
MICRO/PDP-11 system are identical. However,
their locations and connections to the power supply
cause them to run at different speeds.
1.

Make sure the ac power cord is unplugged.

Remove the H7864 power supply from the chassis as described in Paragraph 5.8.7.

Remove the four screws that hold the fan to the chassis.

Remove the fan.

5-35

Install the replacement fan by reversing steps 2 through 4. Make sure the direction of airflow is

away from the power supply.

CAUTION

When replacing the dc fan power cable, observe the
polarity of the connector because it is not keyed.
The curve of the cable connector must match the
curve of the fan housing, as shown in Figure 5-22.

5.8.8 Backplane Assembly Removal and Replacement Procedure
Use the following procedure to remove and replace the backplane assembly.
1.

Make sure the ac power cord is unplugged.

Remove the front plastic cover by holding each end of the cover and pulling it off.
Remove the rear plastic cover by holding each end of the cover and pulling it off.

Remove all the cables connected to the rear patch and filter panel assembly. Note their original
positions.

Remove the rear chassis retaining bracket by removing the four screws that hold the bracket to

the plastic case.

Remove the chassis from the plastic case and put it down on a flat work area.

Open the patch and filter panel assembly by loosening the two (captive) screws on the assembly
and swinging it open.

Remove both top sheet metal covers.
.

I IRy
WU| RSN
connected to the backplane and the signal distribution printed circuit board.
all cables
Remove

Note their original positions.
10.

Remove the RD51-A fixed disk drive as described in Paragraph 5.8.5.

11.

Remove the RX50-AA diskette drive as described in Paragraph 5.8.6.

12.

Remove all the modules from the backplane.

13.

Remove the four screws that hold the backplane assembly to the chassis.

14.

Remove the SO-conductor Massbus cable connected to the signal distribution board.

15.

Pivot the CD section end of the backplane assembly 45 degrees toward the patch and filter
panel assembly. Remove the backplane assembly by lifting it straight out of the chassis.

16.

Install the replacement backplane assembly by reversing steps 2 through 135.

5-36

5.8.9 Control Panel (54-15610) Removal and Replacement Procedure
Use the following procedure to remove and replace the control panel.
1.

Make sure the ac power cord is disconnected.

the plastic case.

Remove the five Phillips screws that hold the control panel to the chassis.
Remove the Berg type connector from the control panel printed circuit board.

Install the replacement control panel by reversing steps 2 through 6.
NOTE
The 2-position line time clock (LTC) switch (switch

1) is used to enable or disable the LTC function.
Setting switch 1 to the on position enables the LTC
to function under software control. Setting switch 1
to the off position disables the LTC function. The

other 2-position switch (switch 2) is not used.

5-37

CHAPTER 6

SYSTEM OPTIONS AND RULES FOR EXPANSION

6.1 INTRODUCTION
The number of optional modules you can add to the MICRO/PDP-11 system depends on two things: the
space available in the backplane and the power available from the power supply. The options listed in this
chapter are those recommended by Digital for expansion of the MICRO/PDP-11 system. You can obtain
additional information on MICRO-PDP-11 system options from the MICRO/PDP-11 System Options
Manual (EK-OLCP5-OD).
6.2 CENTRAL PROCESSING UNIT OPTIONS
The basic MICRO/PDP-11 system’s CPU can be expanded by the addition of floating-point capability.
Two options recommended for use in the MICRO/PDP-11 system provide both single- and doubleprecision floating-point processing: the KEF11-AA and the FPF11. Another CPU option, the KEF11-BB,
adds character string instructions to the basic PDP-11 instruction set.
6.2.1
KEF11-AA Floating-Point Option
The KEF11-AA option performs hardware operations on 32-bit and 64-bit floating-point numbers. This
option provides up to 17 digits of precision as well as integer-to-floating-point conversions. The KEF11AA option’s microcode that implements these functions resides in two chips on one 40-pin package. This
package mounts directly on the KDF11-BE central processing unit (CPU) module (M8189).
6.2.2 FPF11 Floating-Point Option Module
The FPF11 option module performs hardware operations on 32-bit and 64-bit floating-point numbers. This
option provides up to 17 digits of precision as well as integer-to-floating-point conversions. The FPF11

option executes instructions approximately six times faster than the KEF11-AA option does. The FPF11
option’s microcode that implements these functions resides on one quad-height module that is mounted in
the backplane slot adjacent to the KDF11-BE central processing unit (CPU) module (M8189).
NOTE
An open slot (space) must be left between the
KDF11-BE CPU and the FPF11 module. In addition, a 67272 grant card must be placed in slot A-2.
6.2.3

KEF11-BB Commercial Instruction Set Option

The KEF11-BB commercial instruction set (CIS) is a microcode option that adds character string instructions to the basic PDP-11 instruction set. The character string operations conveniently implement most of

the common functions encountered in commercial data and text processing applications. The CIS microcode resides in six MOS/LSI chips mounted on a single 40-pin package.

6.3

MEMORY EXPANSION

The versions of the MSV11-P memory module that may be added to the MICRO/PDP-11 system are
listed in Table 6-1.

Table 6-1

Option
Designation

Module
Designation

MSVI11-PL

M8067-LA

MSV11-PK

M8067-KA

MSV11-P Memory Module Versions
Number

Storage
Capacity

MOS
Chips

Module
Population

of
Rows

256 K words

64 K

Full

128 K words

64 K

Half

(512 K bytes)

(256 K bytes)

Any memory module added to the system needs to be assigned a unique CSR address. The possible
addresses and their corresponding jumper configurations for the M8067-KA memory module are listed in
Table 6-2. Each M8067-KA memory module installed in a system must also be jumpered for its own
starting address. Table 6-3 lists jumper configurations used to select the 256 K word-range address (first
address range) for each M8067-KA memory module added. The 8 K boundary within the 256 K wordrange (partial starting address) is selected by configuring the jumpers as listed in Table 6-4. Other memory
options that may be added to the MICRO/PDP-11 system are listed in Table 6-5.
Table 6-2

Module

Number

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

M8067-KA Memory Module CSR Address Selection

Large System

Small System

Address

LSI-11 Bus

17772100
17772102
17772104
17772106
17772110
17772112
17772114
17772116
17772120
17772122
17772124
17772126
17772130
17772132
17772134
17772136

LSI-11 Bus

Jumper to Ground (Pin E)

Address

772100
772102
772104
772106
772110
772112
772114
772116
772120
772122
772124
772126
772130
772132
772134
772136

Out
Out
Out
Out
Out
Out
Out
Out
In
In
In
In
In
In
In
In

Out
Out
Out
Out
In
In
In
In
Out
Out
Out
Out
In
In
In
In

Out
Out
In
In
Out
Out
In
In
Out
Out
In
In
Out
Out
In
In

Out
In
Out
In
Out
In
Out
In
Out
In
Out
In
Out
In
Out
In

6-2

Table 6-3

M8067-KA Memory Module
Starting Address Configurations (FAR)

First Address Ranges (FAR)

Jumpers to Ground (Pin Y)

Decimal

Octal

Pin X

Pin W

Pin V

K Words

(A21)

(A20)

(A19)

000-248

0000 0000-0174 0000

Out

256-504
512-760
768-1016
1024-1272
1280-1528
1526-1784
1742-2040

0200 0000-0374 0000
0400 0000-0574 0000
0600 0000-0774 0000
1000 0000-1174 0000
1200 0000-1374 0000
1400 0000-1574 0000
1600 0000-1774 0000

Out
Out
Out
In
In
In
In

Out
In
In
Out
Out
In
In

Table 6-4

In
Out
In

Out
In
Out

M8067-KA Starting Address Configurations (PSA)

Partial Starting Address (PSA)

Jumpers to Ground (Pin R)

Decimal
K Words

Octal
K Words

Pin P
(A18)

Pin N
(A17)

Pin M
(A16)

Pin L
(A15)

PinT
(A14)

0000 0000

Out

0004 0000

Out

16
24
32
40
48
56

0010 0000
0014 0000
0020 0000
0024 0000
0030 0000
0034 0000

Out
Out
Out
Out
Out
Out

Out
Out
In
In
In
In

In
In
Out
Out
In
In

In
Out
In
Out
In
Out
In

0040 0000

Out

0044 0000

Out

80
88

0050 0000
0054 0000

Out
Out

In
In

Out
Out

In
In

Out
In
Out

0060 0000

Out

104

0064 0000

Out

112

0070 0000

Out

120

0074 0000

Out

128

0100 0000

Out

136

0104 0000

Out

144

0110 0000

Out

156

0114 0000

Out

160

0120 0000

Out

168

0124 0000

Out

176

0130 0000

Out

184

0134 0000

Out

Table 6-4 M8067-KA Starting Address Configurations (PSA)Cont)
Jumpers to Ground (Pin R)

Partial Starting Address (PSA)

Decimal
K Words

Octal
K Words

192
200
208
216
224
232
240
248

0140 0000
0144 0000
0150 0000
0154 0000
0160 0000
0164 0000
0170 0000
0174 0000

Pin P
(A18)

Pin N
(A17)

Pin M
(A16)

Pin L
(A15)

Pin T
(A14)

In
In
In
In
In
In
In
In

Out
Out
Out
Out
In
In
In
In

Out
Out
In
In
Out
Out
In
In

Out
In
Out
In
Out
In
Out
In

Table 6-5 Additional MICRO/PDP-11 System Memory Options
Battery

Address

Range

Backup

Maodel

Capacity

(K bytes)

(bits)

Chip

MCV1I1-DA

16 K MOS

MCVI11-DC

KMOS

MSV11-LF

128

64 K

MSVI1I1-LK

256

MSV11-PK

256

MSV11-PL

Designation

MRVI1I-D

*Included

On-Board
Refresh

Parity

CSR

64 K

512

64 K

Customer-

(PROM)

Hooks

supplied

PROMs

6.4 COMMUNICATIONS HARDWARE OPTIONS
Figure 6-1 lists a variety of communication hardware options that may be used to expand the
MICRO/PDP-11 system.

DLV

H/F

9,600

E?A’\;IQCITT

LSI-11 BUS

ASYNCHRONOUS|NOT INCLUDED

DLV11-EB

HI/F

19,200

EIA

LSI-11 BUS

ASYNCHRONOUS|

DLVII-E

19,200

EIA

LSI-11 BUS

ASYNCHRONOUS|NOT INCLUDED

DLV11-FB

H/F

19,200

EIA/CCITT

LSI-11 BUS

ASYNCHRONOUS|

BCO3L-05

DLVII1-FA

H/F

19,200

20 MA

LSI-11 BUS

ASYNCHRONOUS|

BCO5M-04

DLVI1-F

H/F

19,200
:

20
MA
EIA/CCITT

LSI-11 BUS

ASYNCHRONOUS|NOT INCLUDED

DZV11-8

H/F

9,600

EIA/CCITT

LSI-11BUS

ASYNCHRONOUS|

BC11U

DLV11-J

H/F

38,400

EIA/CCITT

LSI-11BUS

ASYNCHRONOUS|

NOT INCLUDED

DUV11-DA

H/F

9,600

EIA/CCITT

LSI-118US

SYNCHRONOUS |

BCO5C-25

DPV11.DB

H F

56,000

EIA

LSI-11 BUS

YES

SYNCHRONOUS |

BC26L-25

BCO1V-25

"UNLESS OTHERWISE SPECIFIED, EIA/CCITT INDICATES CONFORMANCE TO EIA RS-232C/CCITT V.24.
MR-9559

Figure 6-1

Communications Hardware Options

6.5

MASS STORAGE OPTIONS
Table 6-6 lists a variety of mass storage options that may be used to expand the MICRO/PDP-11 system.
The devices listed in this table are supported by the KDF11-BE boot/diagnostic ROM (refer to Table 2-2).

Table 6-6

Mass Storage Options

Feature

TUSS-EP

RXV21-ES

RLV22-AP

RX50-AA

RDS1-A

Storage
type

Tape

Diskette

Disk

Diskette

Fixed
disk

Formatted

512 KB

10.4 MB

2x400 KB

10 MB

capacity
per drive

DMA

capability

Yes

(18-bit)

(22-bit)

6-5

Yes

(22-bit)

block
mode

APPENDIX A
BACKPLANE PIN ASSIGNMENTS

Digital Equipment Corporation’s plug-in modules, including those installed in the MICRO/PDP-11 system, all use the same contact (pin) identification system. Figure A-1 shows the contact finger identification
for a typical quad-height module. Each connector contains 36 lines (18 lines on each side of the printed
circuit board). Tables A-1 to A-8 list the backplane pin assignments for each module installed in the
MICRO/PDP-11 system.

\j PIN
§

AA2

AAL

AV2 / '

I\ AV1

I
\

;

CA1

ROW C

ROW D

F cvi

ré

C\lfl/ / y

08T
é
Z

SOLDER SIDE

ov2Pad /

% ‘\,ov1
Figure A-1

CA2

!’

BVLZ/'

\BJ\”

ROW B

BA2

BA1

ROW A

Quad Module Contact Finger Identification

A-1

Table A-1

Bus
Pin

A
B

C
D
E
F
H
J
K
L
M
N
P
R
S
T
U
\Y

A Connector:

KDF11-BE (M8189) Module Backplane Pin Assignments
(Rows A and B)

B Connector:

Side
1

Side
2

Side
1

Side
2

BIRQS L

+5V

BDCOK H

+5V

GND
+12V
BDOUT L
BRPLY L
BDIN L
BSYNC L
BWTBT L
BIRQ4 L
MCENB H
BIAK L
BBS7 L
BDMGO L
BINIT L
BDALOO L
BDALO] L

BDALI1S8 L
BDALI9 L
BDAL20 L
BDAL21 L
PUP CDI1J L
GND
GND
BSACK L
BIRQ7 L
BEVENT L
GND
+5V

GND
+12V
BDALO2 L
BDALO3 L
BDALO4 L
BDALOS L
BDALO6 L
BDALO7 L
BDALOS L
BDALOQ9 L
BDALI10O L
BDALI11 L
BDALI2 L
BDAL13 L
BDAL14 L
BDALIS L

BIRQ6 L

BDALI16 L
BDAL17 L
SRUN L
SRUN L
GND
GND
BDMR L
BHALT L
BREF L
GND
-

BPOK H

- Pins not used.

Table A-2
C Connector:

KDF11-BE (M8189) Module Backplane Pin Assignments
(Rows C and D)

D Connector:

Side
1

Side
2

Side
1

Side
2

+5V

GND

Bus
Pin

—

M
N

BIAKI L
BIAKO L

BDMGI L

D
E
F
H

]
K

T
U
\Y
- Pins not used.

BDMGO L

—
GND

Table A-3

MSV11-PK (M8067) Module Backplane Pin Assignments

(Rows A and B)
A Connector:

Bus
Pin

Side
1

B Connector:
Side
1

Side
2

+5V

BDCOK H

+5V

C
D
E
F
H
J
K

BDALI16 L
BDAL17 L
+5 V BBU
GND

GND
+12V
BDOUT L
BRPLY L
BDIN L
BSYNC L

BDALI18 L
BDALI19 L
BDAL20 L
BDAL21 L
GND

GND
+12V
BDALO2 L
BDALO3 L
BDALO4 L
BDALOS L

REFKILL

L
M

BWTBT L
-

-5 V MEAS*
—5 V MARGIN*

BDALO6 L
BDALO7 L

GND

BIAKI L**
BIAKO L**

GND
-

BDALOS L
BDALO9 L

P
R

BREF L

BBS7 L
BDMGI L**

BDALI10 L
BDALI1I L

S
T

+12 V BBU
GND

BDMGO L**
BINIT L

GND

BDALI2 L
BDALI3 L

SAI16K***

BDALOO L

BDAL14 L

+5 V BBU

BDALOI L

+5V

BDALIS L

Pins not used.

Must be hardwired on backplane or damage to MOS device may result.

Hardwired via etch on module.

*** When SA16K (starting address 16K) jumper is removed, there is no connection to this pin (used in memory test only.

A-3

Table A-4
C Connector:

MSV11-PK (M8067) Module Backplane Pin Assignments
(Rows C and D)

D Connector:

Side
1

Side
2

Side
1

Side
2

+5V

—

Bus
Pin

M
N

BIAKI L*
BIAKO L*

R
S

BDMGI L*
BDMGO L*

—~

\V;

- Pins not used.

* Jumpered on module.

Table A-5

Bus
Pin

A Connector:

DZV11-A (M7957) Module Backplane Pin Assignments
(Rows A and B)

Side
1

Side
2

+5V

C
D
E
F
H
J
K
L
M
N
P
R
S
T
U
\'

GND
-

- Pins not used.

B Connector:

Side
1

Side
2

BDCOK H

+5V

GND
BDOUT L
BRPLY L
BDIN L
BSYNC L
BWTBT L
BIRQ L
BIAKI L
BIAKO L
BBS7 L
BDMGI L
BDMGO L
BINIT L
BDALOO L
BDALO! L

~
GND
+5V

GND
+12 'V
BDALO2 L
BDALO3 L
BDALO3 L
BDALOS L
BDALO6 L
BDALO7 L
BDALOS L
BDALO9 L
BDALIO L
BDALI1 L
BDALI12 L
BDALI13 L
BDAL14 L
BDALIS5 L

Table A-6

DZV11-A (M7957) Module Backplane Pin Assignments
(Rows C and D)

C Connector:

D Connector:

Bus

Side

+5V

BIAKI L*

BIAKO L*

BDMGI L*

BDMGO L*

—

- Pins not used.

* Jumpered on module.

Table A-7

RQDX1 (M8639) Module Backplane Pin Assignments

(Rows A and B)
A Connector:

Bus
Pin

B Connector:

Side

+5V

C
D
E
F

BDALI16 L
BDALI17 L

BPOK H

BDALI8 L
BDALI19 L

GND
+12V

BDIN L

GND

BDAL20 L
BDAL21 L
-

BDALO2 L

GND
+12V
BDOUT L
BRPLY L

L
M
N
P

GND
BDMR L
-

BSYNC L
BWTBT L

R
S
T
U

BREF L
GND
-

BIRQ4 L BIAKI L
BIAKO L
BBS7 L
BDMGI L
BDMGO L
BINIT L
BDALOO L

BDALO! L

GND

BDALOS L

BDALO6 L
BDALO7 L

GND
BSACK L
GND
-

+5V

— Pins not used.

A-5

BDALO3 L
BDALO4 L

BDALOS L
BDALQ9 L
BDALIO L
BDALII L
BDALI12 L
BDALI3 L
BDALI14 L

BDALIS L

Table A-8

Bus
Pin

A
B

C Connector:

RQDX1 (M8639) Module Backplane Pin Assignments
(Rows C and D)

D Connector:

Side
1

Side
2

Side
1

Side
2

+5V

GND

M
N

GND
-

BIAKI L*
BIAKO L*

GND
-

R
S

BDMGI L*
BDMGO L*

—

GND

- Pins not used.

* Jumpered on module.

A-6

APPENDIX B

ON-LINE DEBUGGING TECHNIQUE (ODT) COMMANDS

A portion of the microcode on the KDF11-BE CPU module emulates the capability normally found on a
programmer’s console. The CPU interprets streams of ASCII characters from the console terminal as
console commands. This feature is called the microcode on-line debugging technique, or micro-ODT. The
KDF11-BE module’s micro-ODT accepts 18-bit addresses, allowing it to access 248 K bytes of memory
and the 8 K-byte I/O page.
The MICRO/PDP-11 system enters console emulator mode when any of the following occurs.
1.

The program executes a halt instruction.

The system detects an error condition.

You press the halt switch on the control panel.

When the system halts program and enters console emulator mode, the system displays the following.
nnnnnn

The number nnnnnn is the octal location of the next instruction to be executed, and the @ is the ODT
prompt character. You may now type any ODT command. The ODT command set is listed in Table B-1.

B-1

Table B-1

Console ODT Commands

Command

Symbol

Function

Slash

Prints the contents of a specified location.

Carriage return

<CR>

Closes an open location.

Line feed

<LF>

Closes an open location and then opens the next contiguous

Internal

$orR

Opens a specific CPU register.

Processor

Opens the PS; must follow a § or R command.

Starts execution of a program.

Proceed

Resumes execution of a program.

Binary dump

CTRL/S

For manufacturing use only.

(Reserved)

Reserved for use by Digital. (Causes the CPU to execute a

location.

status word
designator

microcode routine that, in effect, does nothing.)

APPENDIX C

GLOSSARY

ANSI - The acronym for American National Standards Institute.
Answerback - A preprogrammed response from a terminal.

ASCII - 1) The acronym for American Standard Code for Information Interchange. 2) A 7- or 8-bit

standard for transmission of data for processing.
Backplane - The connector block section of the system where printed circuit boards are inserted.

Baud rate — Synonymous with signal events (usually bits) per second; used as a measure of serial data flow
between a computer and/or communication devices.
Bootstrap - A programmed routine consisting of enough instructions to load and transfer control to an
input/output device’s program. The routine is started by a switch or automatically when the computer is
turned on.
Buffer control - A temporary storage memory used to equalize different operating speeds.
Bus error trap — A high-priority interrupt that halts the processor routine and initiates a subroutine.

Byte — A group of binary bits used to represent a single character.
Channel - A path for electrical transmission between two or more points.
Control panel - The part of the system that permits the monitoring and manipulation of an operation
through the use of control switches and indicators.

CPU - 1) The acronym for central processing unit. 2) The part of the computer that contains the
arithmetic and logical unit, instruction control unit, timing generators, and input/output interfaces of the
basic system.
Diagnostic program - A program designed to detect and/or isolate a malfunction in a device, printed
circuit board, or component.

DMA - 1) The acronym for direct memory access. 2) A facility that allows input/output transfers to
bypass the CPU’s general registers and go directly to/from memory.
EIA - The acronym for Electronic Industries Association.

EIA interface - The standard code defined by the Electronic Industries Association for use in data
exchange.

C-1

Error message — A printed statement indicating the system has detected a mistake or malfunction.
Floating-point processing - A method of calculation that automatically moves the decimal point.
FRU - Field-replaceable unit.

Hardcopy - Output in a permanent form (usually on paper or paper tape) rather than in temporary form

(such as a visual display on a video terminal).

Head - The part in a disk(ette) drive or magnetic tape drive that reads, records, and erases data on the

storage medium being used.

Instruction set - A group of commands that tells the computer what operation to perform.
Input/output (I/0) - A descriptor or devices that accept data for transmission to a computer system

(input), and accept data from a computer system for transmission to a user or process (output). Devices
such as terminals that perform both functions are known as 1/O devices.
LED - The acronym for light-emitting diode.

Line wraparound — Occurs when the end of a line is reached on a video screen; succeeding characters

automatically start at the beginning of the next line.
LSI - The acronym for large scale integration.

Memory management — A unit that allows CPU access to memories of 64 K bytes or more, and provides
protection and organization of memory areas.

Modem - 1) The acronym for modulator-demodulator. 2) A telecommunications device that provides the

appropriate interface between a computer and a communications link.
MOS - The acronvm for metallic oxide semiconductor.

MSCP - The acronym for mass storage control protocol.

Nonvolatile memory - A storage medium that retains its data in the absence of power.
ODT - The acronym for on-line debugging technique.

Oersted — A unit of magnetic field strength equal to the magnetic intensity one centimeter from a unit
magnetic pole. Abbreviation: Oe.

Off-line - Pertaining to equipment, devices, and events that are not under direct control of a computer.

On-line - Pertaining to equipment, devices, and events that are under direct control of a computer. (Data
is introduced into the CPU immediately.)

Parity bit - An extra bit added to a byte or word to ensure that there is always either an even or odd
number of bits, according to the logic of the system.

Peripheral device — A device that is external to the CPU and main memory (e.g., a printer, modem, or

terminal) but connected to them by appropriate electrical connections.

C-2

Processor status word - A register in some computers that indicates the current priority
of the CPU, the
condition of the previous operation, and other basic control items.
Program counter - A register in the CPU that holds the address of the next instruction
(except in the case
where the current instruction causes a jump).

PROM - 1) The acronym for programmable read-only memory. 2) A ROM that can be programme
d by a

user.

Protocol - A formal set of conventions governing the format and relative timing of
message exchange
between two communicating processes.

Quad module - An option for LSI-11 systems that requires four connectors on the backplane.
RAM - 1) The acronym for random-access memory. 2) A memory in which the CPU
can access all
locations with equal facility.
Random-access — Pertaining to a storage device from which data or blocks of data can
be read in any
order. (Therefore, in a random-access device, it is not necessary to read from the beginning
to retrieve the
desired data.)

Real-time - Pertaining to the actual time during which a process takes place.
Reserved instruction trap - A nonprogrammed conditional jump to a specified location that
the initiation of a reserved instruction.

occurs upon

ROM - 1) The acronym for read-only memory. 2) Preprogrammed memory that can be read from,

not written to.

but

Scrolling - The upward or downward movement of data on a video screen that allows new data to
be
displayed.
Subsystem - An organization of computer components (e.g., a tape drive and controller)

functional part of a larger system.

that makes up a

Trap - A conditional jump to a known memory location, performed automatically by hardware
as a side
effect of an instruction’s execution. The address location from which the jump is made is stored. (A trap
is
distinguished from an interrupt, which is caused by an external event.)
Utility program - A program used to perform some frequently required process in the

computer.

operation of a

EK-OLCP5-TM-002

Digital Equipment Corporation