Digital PDFs

EK-11V03-TM-002

2000

80 pages

Original

48MB

view download

OCR Version

24MB

view download

Document:	PDP-11V03 System Manual
Order Number:	EK-11V03-TM
Revision:	002
Pages:	80
Original Filename:

OCR Text

Digi tal

Mayna

Equ ipment Corpora

rd 4

Massachusetts

ion

tt
/A&

/M/

’XW

/JW

MWW

‘MZ

&M/4mr.w.

w//wm_

4//;//

44»//(

,pg

EK-11V03-TM-002

PDP-11VO03

System Manual

digital equipment corporation - maynard, massachusetts

Preliminary Edition, March 1976
1st Edition, November 1976

2nd Printing (Rev), July 1977

Copyright © 1976, 1977 by Digital Equipment Corporation
The material in this manual is for informational
purposes and is subject to change without notice.
Digital Equipment Corporation assumes no responsibility for any errors which may appear in this

manual.
Printed in U.S.A.

~ This document was set on DIGITAL’s DECset-8000
computerized typesetting system.

The following are trademarks of Digital Equipmen»t
Corporation, Maynard, Massachusetts:
DEC

DECtape

DECCOMM

DECUS

RSTS

DIGITAL

TYPESET-8

DECsystem-10

DECSYSTEM-20

MASSBUS

PDP

TYPESET-11

HLEINLLE

UNIBUS

CONTENTS

Page

CHAPTER 1

BASIC SUMMARY OF SYSTEM OPERATION

1.1
1.2

GENERAL
. . . . .
e
e e e e e e e
TURNING ON THE PDP-11V03
. . . . . . . . . . . . o oo
oo

1.3

LOADING THE DISKETTE

1.6.3

. . . . .
LOADING THE OPERATING SYSTEM
HOW TO COPY AN RT-11 DISKETTE
PROGRAM ORGANIZATION
. . . .
General
. . . . . ..
Normal Operating Software
. . .
Diagnostic Programs . . . . . . .

.
o i v v e e
. . . . . . . . . . . . ... ...
. . . . . . . . . . ... ... ...
. . .
oo e e d e
e e
e e
e e
e e e
. . . . . . . . . .. ... .. ..
. . . ..o
oL

1-7
1-10
1-11
1-12
1-12
1-12
1-13

CHAPTER 2

HARDWARE CHECKOUT

2.1

GENERAL
. . . . o
NO “$” UPON POWER UP
. . . . . .
Check Primary Power
. . . . . .
Check Computer Power
. . . . .
Check Terminal Cable Connection
DECwriter II Checks
. . . . . .
DECscope Checks
. . . . . . . .

2-1
2-1
2-3
2-3
2-4
2-4
2-5

2.34

e e
e e e e
e e
e
. . .
o
e e e e
. . . . .o oo
. . . . . . ..o
. . . . . . . . . . . . . . .. ...
. . . . .« . o e
. . o v
e e e
e
Check Interface Cabling . . . . . . . . . . . . . . . .
.. ... ...
NO “.” RESPONSE AFTER BOOTSTRAPPING
. . . . . . .. ... . ...
Perform XM and XC . . . . . . . . . . .
e
e e e
Check the Diskette Label
. . . . . . . . . . . . .. ...
...
Check Disk Drive Controller Cabling
. . . . . . . . . . .. ... ...
Check Disk Drive Power . . . . . . . . . . . . .. ..o

CHAPTER 3

DIAGNOSTIC PROGRAMS

3.1

3.3.2

GENERAL
. . . . e
e e
e
HARDWARE-IMPLEMENTED DIAGNOSTICS
. . . . . . ... .. ....
ODT . . . o
e
e e e e
e e e e
REVII-A
. . . e
e e e e e e
DIAGNOSTIC SOFTWARE . . . . . . . . . .
o e
RXDP . . . .
e e e e e e e e e e
e e
How to Copy an XXDP Diskette (RXDP) . . .. . .. ... ...
How to Find a Diagnostic Program
. . . . . . . . . . . ... ..
Running a Diagnostic Program
. . . . . . . . .. ... ... ..
Modifying a Diagnostic Program . . . . . . . . . . .. ... ...
DEC/X11
. . . o
e e e e e
e

APPENDIX A

INSTALLATION

GENERAL

1.4

1.5

1.6

1.6.1
1.6.2

2.2

2.2.1
2.2.2
2.2.3

2.2.4
2.2.5
2.2.6
2.3

2.3.1
2.3.2

2.3.3

3.2

3.2.1
3.2.2
3.3

3.3.1

3.3.1.1

3.3.1.2
3.3.1.3
3.3.14

. . . . .
e e e e e e e e e e e
UNPACKING THE COMPUTER CABINET . . . ... . .. ... ... ...

bi3t

. . . . . .

1-1
1-1

29
2-11
2-11
2-11
2-11
2-13

3-1
3-1
3-1
3-2
3-9
3-9
3-9
3-11
3-12
3-12
3-13

A-1
A-1

CONTENTS (Cont)

Page

UNPACKING THE DECSCOPE .
UNPACKING THE DECwriter II.
SYSTEM SETUP
. . . . . .
SYSTEM CONNECTIONS
. . .
BAUD RATE SETTINGS
. . . .

APPENDIX B

RELATED DOCUMENTS

‘B.1

B.4

HARDWARE DOCUMENTATION
. . . . . . ..
OPERATING SYSTEM DOCUMENTATION . . .
RT-11 Version 2 . . . . . . . o i i e e e
RT-11 Version 3 . . . . . . . o v i e e e e
OPTIONAL SOFTWARE DOCUMENTATION
. .
DIAGNOSTIC SOFTWARE DOCUMENTATION .

APPENDIX C

SYSTEM SPECIFICATIONS

C.1

MECHANICAL CHARACTERISTICS
. .
ELECTRICAL CHARACTERISTICS . . .
ENVIRONMENTAL CHARACTERISTICS
Model Designations
. . . . . . . . . .o

APPENDIX D

SYSTEM HARDWARE COMPONENTS

A4
A5

A.6

. . . . . . . . . .
..
...
. . . . . . . . . . . .. ..
. ...
e e e e e e e e e e e s e
. . . o
o
e e s
. . . .
o
e e e e e e e

... ...,
... ... ... ...
e e e e e e e
e e
e e
e e e
. .. ... .. ....
... ... ... ...

B-1
B-1
B-1
B-1
B-2
B-2

. . . . . . . .
...
. . . . . . ... .. ...
. . . . . . . .. ... .. ...
e

C-1
C-1
C-2
C-3

APPENDIX E

SYSTEM SOFTWARE COMPONENTS

E.1

E.4

GENERAL
. ... ... .. e
e e e
e e e
e
e
OPERATING SYSTEM SOFTWARE (QJOO3-AY)
. . .. ... ... ....
DEC-11-ORTSA-E-YC1
. . . . . . .. ..
o
..
DEC-11-ORTSA-E-YC2
. . . . . . . . .«
. oo
OPTIONAL SOFTWARE
. . . . . . . . . . .
o ...
DIAGNOSTIC SYSTEM SOFTWARE (ZJ215-RY) . . ... .. .. ... ..

E-1
E-1
E-1
E-2
E-3
E-3

APPENDIX F

SYSTEM CONFIGURATION AND EXPANSION

F.1

PRIORITY CHAINING . . . . . . . .
o
o s,
BUS TERMINATION . . . . . . . . .
o
o
oo
e
EXPANSION
. . . e
e
e

B.2

B.2.1
B.2.2
B.3

C.2
C.3

E.2

E.2.1
E.2.2
E.3

F.2
F.3

..
. .
e e
e e
. .
. .

A-1
A-3
A-5
A-5
A-6

F-1
F-1
F-1

FIGURES

+—
O 00O~

UnNH

]

JIONWUn

S RS

2-10

2-11
2-12
2-13

2-14

3-1

A-1
A-2
A-3

A4
A-5

F-1

F-2

Page

Title

Figure No.

e e e e 1-2
PDP-11VO3 System . . . . o« v v v e i e e e e e
. . . . . . . . . . . . . . oo 1-3
Computer Control Console
. 1-4
Computer Cabinet, Rear View . . . . . . . . . . . . ...
. . . . . . . . . . . . . oL 1-5
DECwriter II Control Switches
e e 1-6
. . . . . . . . . o .o
DECscope Controls
. . . . . . . . . . oo 1-6
DECscope Keyboard
1-7
e e e e e e e e e e e e e e e e e e
. . . . . .
Disk Drives
. . . . . . . . . . . oo 1-8
Loading the Diskette
Computer System Components . . . . . . . . . . ..o 1-12
o o v v oo v 2-2
Flowchart for No $ Condition . . . . . . . . . « .« « o o
. . . . . . . . . . ... ... .. ... 2-3
Rear View of Computer Cabinet
v oo 2-4
v v v
DC ON and RUN Indicators . . . . . . . . . . . o«
Computer ac Power Switch and Fuse . . . . .. .. ... . ... ... ... 2-4
e e 2-5
. . . . . . . .« « o v v v v vt
DECwriter IT Fuse Locations
. ... ... 2-6
...
.
..
.
.
.
. . .
DECscope Power and Intensity Controls
Tipping the DECscope . . . . . . . . . . o oo v v vt o b 2-7
o s 2-8
oo
. . . . . . . . .« . .
Bottom View of DECscope
o 2-9
..
.
.
.
.
.
.
.
.
.
.
Panel
Snap-off
Removing
... ... 2-10
...
...
.
.
.
.
PDP-11V03 A/E Module Locations . . . . .
PDP-11V03 F/H Module Locations . . . . . . . . . . . .. .. ... .... 2-10
o o oo o 2-12
o
Flowchart for No. ““.”” Condition . . . . . . . . . . .«
2-13
oo
.
.
.
.
.
.
.
.
.
.
.
.
Diskette
the
Removing
2-14
...
.
..
.
.
.
.
.
.
.
.
Rear View of Floppy Disk Drives . .
Restart Address and Help Message . . . . . . . . . . . . . . ... 3-10
Typical Directory Listing . . . . . . . . . . oo 3-11
PDP-11V03 Shipping Container . . . . . . . . . .« . . . . .. e A-2
. A-3
.
DECscope Shipping Container . . . . . . . . . . .
DECwriter IT Packaging . . . . . . . . . .« .« o o oo A4
A-5
e e e e
. . . . . . o o o v v v e e e e e
Cable Tie Location
A-6
oo
..o
.
.
.
.
.
.
.
.
.
System Interconnection
F-1
...
..
.
.
.
.
.
.
.
.
Side
PDP-11V03 Basic System Backplane — Module
F-2
Examples of 16K X 16-Bit Systems . . . . . . . . . . .. . ... ...
2K Two-User Expanded System . . . . . . . . . . . ..o F-2

TABLES

1-1

2-1

3-1
3-2

Page

Title

Table No.

Diskette Handling Precautions
PDP11-V03 Switch Positions
ODT Program Commands . .
REVI11-A Commands . . . .

.
.
.
.

. .
. .
. .
.«

.
.
.
v

. . . . . . o000
. . . . . o oo
oo o
. . o
e e
e
v v v e e

1-9
2-1
3-3
3-8

PREFACE

This manual is intended to introduce the user to the PDP-11V03 system. A step-by-step turn on
procedure is presented in Chapter 1, and basic troubleshooting procedures are covered in Chapter 2.
Those familiar with computer hardware may wish to go directly to Paragraph 1.6 for an overview of
the software. Diagnostic software is described further in Chapter 3.

(

The user is advised not to unpack the system if installation arrangements have been made with
DIGITAL Field Service. However, if the system is to be installed by the user instead of by DIGITAL
Field Service, Appendix A contains installation instructions.

CHAPTER 1
BASIC SUMMARY OF SYSTEM OPERATION

1.1 . GENERAL

The PDP-11V03 is a complete system, containing all the hardware and software necessary for the user
to develop and run programs in assembly language. Optional software allows programming with
BASIC, Multiuser BASIC, FORTRAN IV, FOCAL and APL. The PDP-11V03 is shown in Figure 1-1
and will have one of the two terminals shown.

This chapter assists the user in establishing communication with the system. Once the PDP-11V03 is
responding to commands typed on the keyboard, it is ready for the user’s application. If the system has
been installed by DIGITAL Field Service it will be ready to use. If not, refer to Appendix A for
installation instructions. When the system has been installed, it may be powered up and loaded by the
procedures given in the following paragraphs.
1.2 TURNING ON THE PDP-11V03
The recommended power-up sequence is listed below. The numbers in parentheses are index numbers,

keyed to Figures 1-2 through 1-6. If the system does not respond as noted, refer to Chapter 2 for
further instructions.

On the front panel of the PDP-11V03 (Figure 1-2) ensure the control switches are set as
follows.

a.
b.
c.

DC ON/OFF switch (1) to OFF
ENABLE/HALT switch (2) to ENABLE
LTC ON/OFF switch (3) to OFF

On the rear of the computer cabinet (Figure 1-3) switch the circuit breaker (4) to ON. The ac
monitor lamp (5) should light.

Ifthesystem has a DECwriter II hard copy terminal (Figure 1-4), set the switches as follows.
cao o

POWER ON/OFF switch (6) to ON
LINE/LOC switch (7) to LINE
FDX/HDX switch (8) to FDX
BAUD RATE switches (9) to 300
CAPS LOCK key (10) depressed

1-1

RXO01

FLOPPY DISK
DRIVE

m
T~

VT52 DECSCOPE

Uil"IIIIlII

11vV03 CABINET

III

—

LA36 DECWRITER I

11-5289

Figure 1-1

PDP-11V03 System

1-2

= ON; DOWN = OFF)
DC ON/OFF (UP

2. ENABLE/HALT (UP = ENABLE; DOWN = HALT)
3. LTC ON/OFF (LINE TIME CLUCK) (UP = ON; DOWN = OFF)
14. DC ON Indicator

15. RUN Indicator

Figure 1-2

Computer Control Console

THIZ OBDER SUPPLIED

4. AC BREAKER

5. AC MONITOR LAMP
8565-10

Figure 1-3

Computer Cabinet, Rear View

1-4

: FOWER
a

BACK

soace.

wdbe —f— saubieare —f

FO%

HiXe

aure
o

CHAR
SeT
Lork

meRE
2
.

taps

CTAL . {ore

STD.

ALY .

CHANACTER SEY

PAPER DEVICE SELECT

OUT SELECT AVAIL

(a) Keypad Type
7622-28

¥ALE

SEALE

SELETE

LHIET

HETURK

LoLK

REBEAT

(b) Rocker Switch Type
6. POWER ON/OFF

7. LINE/LOCAL

(ON KEYPAD TYPE, DEPRESSED = LOCAL

NOT DEPRESSED = LINE)
8. FDX/HDX

(DEPRESSED =HALF DUPLEX

NOT DEPRESSED = FULL DUPLEX)
9. BAUD RATE

(ON KEYPAD:

110 DEPRESSED =110BAUD

300 DEPRESSED = 300 BAUD
BOTH DEPRESSED = 150 BAUD)
10. CAPS LOCK

(SHIFT LOCK)

6934-8

Figure 1-4

DECwriter II Control Switches

1-5

If the system has a DECscope video terminal, set the control switches as follows.
a.

POWER ON/OFF switch (11) to ON (Figure 1-5)

CAPS LOCK key (12) depressed. (Figure 1-6)

The DECscope warms up in about 30 seconds. The intensity of the display may be
adjusted by a control (13) on the rear of the cabinet (Figure 1-5).
13

11. POWER ON/OFF
13. INTENSITY CONTROL
8565-3

Figure 1-5

DECscope Controls

12. CAPS LOCK
7966-3

Figure 1-6

DECscope Keyboard
1-6

DC ON and
Onthe PDP-11V03 (Figure 1-2) switch the DC ON/OFF switch (1) to ON. The
printing (or
by
respond
should
system
the
Also,
light.
should
RUN indicators (14) (15)
is
displaying) a dollar sign (§). The “$”" is a prompt character. This indicates that the system
refer
,
waiting for a command from the operator. If the ““¢”” does not appear upon power-up
to the instructions in Chapter 2.

The next step is to load the diskette into the floppy disk drive.
1.3

LOADING THE DISKETTE

This operating system 1s
The software distributed with the PDP-11V03 is the RT-11 operating system.
of 2 or “RT-11 V03-01
1
contained on two diskettes. Locate the diskette labeled “RT-11 V02C Disk
1-1. Refer to Figures
Table
in
Disk 1 of 2.” When handling the diskette observe the precautions listed
1-7 and 1-8, and load the diskette as follows.

DISK
DRIVE

8125-10

Figure 1-7

Disk Drives
1-7

DISK COVER

ENVELOPE

DO NOT

TOUCH HERE

SURFACE

11-5290

Figure 1-8

Loading the Diskette

Remove the diskette from the envelope and hold it with the label side up, and the
label end
toward you.

Open the left-hand drive door by pinching the release mechanism and raising the

Gently insert the diskette as far as it will go. Do not force it into the drive.,

Close the drive door until it clicks. The door will latch when fully closed.

door.

When the door is latched the drive will start automatically, and the system will be
ready for a command from the operator.

bis 81t
B

1-8

Table 1-1

Diskette Handling Precautions

Do not write on the envelope containing the diskette. Write any information on a label prior
to affixing it to the diskette.

Paper clips should not be used on the diskette.

Do not use writing instruments that leave flakes, such as lead or grease pencils, to label the

envelope.

Do not touch the disk surface exposed in the diskette slot or index hole.
Do not clean the disk in any manner.

Keep the diskette away from magnets or tools that may have become magnetized. A diskette

exposed to a magnetic field may lose information.

Do not expose the diskette to a heat source or prolonged sunlight.

Always return the diskette to the envelope supplied with it to protect it from dust and dirt.
Diskettes not being used should be stored in a file box if possible.

When the diskette is in use, protect the empty envelope from liquids, dust, and metallic
materials.

10.
11.

Do not place heavy items on the diskette.

Do not store diskettes on top of computer cabinets or in places where dirt can be blown by
fans into the diskette interior. Store diskettes in their envelopes in horizontal stacks of ten
diskettes or less. If vertical storage is necessary, the diskettes should be supported so that
they do not lean or sag, but should not be subjected to compressive forces. Permanent
deformation may result from improper storage.

12.

If a diskette has been exposed to temperatures outside the range of the operating environment, allow 5 minutes for thermal stabilization before use. (The diskette must be removed
from its shipping container during this time.)

EBENE

1-9

1.4 LOADING THE OPERATING SYSTEM
Before the computer can read the programs on the diskette, the disk drive must first be bootstrapped.
A bootstrap is a short program used to establish communication between the computer and a periph-

eral device. In this case, the peripheral device is the disk drive. Once the bootstrap program has been
performed, the computer can interact with the disk drive to use the operating system programs con-

tained on the diskette. To boot Disk Drive 0 (the left-hand drive) proceed as follows.
NOTES
When presenting examples of commands to be typed,
this manual uses the convention of underlining all
characters that are printed or displayed under the

control of the computer. Characters typed by the operator are not underlined.

Characters enclosed by <
> are nonprinting commands. For example,
<CR> indicates carriage return, and operator is to press the RETURN key.

Type “DX” behind the “$” that is displayed when the system is started up.

$ DX <CR>

The computer reads the diskette and, after several seconds, prints the name of the operating system.
For example:

$DX <CR>
RT-11SJ V02C-xx

The “xx” in this example represents the letters which indicate the revision status of the operating
system. The period (.) printed by the computer indicates that the operating system is now controlling
the computer, and is monitoring the keyboard. RT-11 uses the period as a prompt character to signal
that it is waiting for a command from the operator.
At this time the system is ready for the user’s application. It is advisable to copy the RT-11 diskettes on

to spare diskettes and store the originals for future use. This operation is presented briefly here, but it
is recommended that the user become familiar with the following documents before proceeding.

For systems using RT-11 V02C:

Getting Started With RT-11(DEC-11-ORCPA-E)
RT-I1 System Reference Manual(DEC-11-ORUGA-C and addendums)
For systems using RT-11 V03-01:

Introduction to RT-11(DEC-11-ORITA-A-D)
RT-11 Documentation Directory(DEC-11-ORDDB-A-D)
RT-11 System User’s Guide(DEC-11-ORGDA-A-D)

These manuals are included with the PDP-11V03 system as part of the software documentation.

I EIRN:E

1-10

1.5

HOW TO COPY AN RT-11 DISKETTE

An RT-11 diskette may be copied by using a utility program called PIP. To copy the contents of one
diskette onto a second diskette, proceed as follows.
1.

Load the master diskette into disk drive O (the left side).

Load the diskette which is to receive the copy into disk drive 1 (the right side).

Boot disk drive O:
$ DX <CR>
The computer will print the operating system name and the prompt character. For example:
RT-11SJ V02-xx

Next, call the PIP program:
. R PIP <CR>

The computer will respond by loading the program and by printing an *:
*

Zero (erase) the contents of the new diskette:

* DX1:/Z <CR>
The computer will ask:
DX1:/Z ARE YOU SURE?

CAUTION
When the operator responds with a Y to this question, the computer will erase the contents of the diskette in disk drive 1 (the right side). Ensure that the
master diskette you are copying is in disk drive 0 (the
left side).
Answer by typing Y for yes. The computer will zero diskette 1 and then print an *:
DX1:/Z ARE YOU SURE? Y <CR>
%

Next, type the copy command:

*DX1:**=DX0:**/X/Y <CR>
The computer will copy the contents of the diskette in disk drive 0 onto the diskette in disk
drive 1. This is completed in about 5 minutes and the computer then types the * prompt
character.

After the programs have been copied, it is necessary to build a “bootstrap blockTM on the
diskette, so that it may be bootstrapped. To do this type the following command:

f_DXl:A=DX1:MONITR.SYS/U <CR>
The computer will build a bootstrap on the diskette and then type an *.

Verify that the copying operation is complete by bootstrapping disk drive I:
* DXI1:/0

The computer will print the operating system name from the diskette in disk drive 1.
1.6

PROGRAM ORGANIZATION
General

1.6.1

The programs used by the PDP-11V03 can be grouped in two general categories: those intended for
normal operation, and those intended for diagnosing problems. All normal operating programs are
under control of the RT-11 software operating system. Diagnostic programs can be divided into hardware-implemented programs and software programs.
Normal Operating Software

1.6.2

The software used for normal operation consists of the RT-11 operating system, optional program-

ming language processor programs, and the user’s application programs.

The RT-11 operating system is a collection of programs that organizes the hardware components into
an intelligent unit that is easy to use. Programs that are written and executed for a specific user-defined
system requirement are referred to as “‘application programs.” The RT-11 operating system programs
serve as “software tools” for application program development, and provide the system environment
in which the application programs run. The operating system interfaces between the operator and the
computer hardware executing the application programs. (See Figure 1-9.)

eeorLe

OPERATING

APPLICATS

SYSTEM

HARDWARE

11-5320

Figure 1-9

Computer System Components

1-12

To perform these functions the operating system uses two basic sets of software. It uses monitor (or
executive) software to communicate with the operator and with the application programs, and it uses a
set of system utility programs to provide the means for developing application programs. Both the
monitor and the utility programs are explained in the RT-11 software documentation. This subject is
also covered in Microcomputer Handbook in Section 4, Chapter 2.
The optional programming language processor programs translate easy-to-use “‘high-level”’ program-

ming languages (FORTRAN IV, BASIC, FOCAL, and APL) into the machine language used by the
computer hardware. Ordering information for these options is included in Appendix E.

1.6.3 Diagnostic Programs
Diagnostic programs are used to verify that the system is working correctly or to isolate malfunctions

to the failing component. They are used for maintenance purposes and play no part in normal system
operation (except automatically during the system turn-on sequence). There are three groups of diagnostic programs for the PDP-11V03: the DEC/X11 system exerciser software, the RXDP component
diagnostic software, and the ODT and REV11-A hardware-implemented diagnostic programs.
The DEC/X11 software system consists of a collection of diagnostic programs plus the monitor and
utility programs necessary to generate, run, control, and update these diagnostic programs. The

DEC/X11 “run-time exerciser” is a combination of individual programs linked together to produce an
interactive system that exercises the PDP-11V03 as a system. Its primary use is as a confidence check of
the reliability of the PDP-11V03 functioning as an integrated system. Each PDP-11V03 system is
shipped with a DEC/X11 run-time exerciser configured for the requirements of that individual system.
The RXDP diagnostic software system also consists of a collection of diagnostic programs plus monitor and utility programs. RXDP programs, however, are designed to diagnose individual system
components, rather than to exercise the overall computer system.
The third group of diagnostic programs is built into the computer hardware, and does not have to be
loaded from a diskette. There are three small diagnostic programs located on the REV11-A circuit
card (M9400-YA module) inside the computer. One of these programs automatically checks nonmemory modifying processor instruction execution during the power-on sequence. The remaining two
programs check memory modifying processor instruction execution and system memory: the last two

programs are automatically executed when “bootstrapping” the system, or they can be executed as

directed by the operator.

The remaining diagnostic program is the hardware On-line Debugging Technique (ODT). This is built
into the computer processor, and is the most basic means of communicating with the computer. It

consists of a group of commands and routines for locating error conditions and for communicating
with the computer in simple commands and responses. The diagnostic use of ODT commands allows
the operator to use the terminal for functions normally available on a control panel containing an
array of lights and switches.
DEC/X11, RXDP, REV11-A, and ODT programs are described further inChapter 3.

EEN

1-13

CHAPTER 2

HARDWARE CHECKOUT

2.1

GENERAL

Frequently the cause of a problem can be traced to an incorrect switch position or a loose cable. The
checks in this chapter are intended to identify such problems. If the procedures here do not solve the
problem, the user should arrange for equipment servicing. There are several alternative servicing arrangements. Check the warranty and contact the local Digital Field Service representative.
This chapter addresses two basic symptoms: no “$” and no *.’ on the terminal. The checks here are
mechanical and electrical. Electronic checks may be performed by the use of the diagnostic software;
however, these require familiarity with the maintenance programs. Refer to Chapter 3 and to the
diagnostic software documentation for further information.

2.2

NO “$” UPON POWER UP

If the “$” is not printed out when the computer’s DC ON switch is switched on, refer to Table 2-1 and
check the switch settings. Refer to Figures 1-2 through 1-6 to locate the switches. If no incorrect
settings are found, follow the steps in the flowchart in Figure 2-1. If any loose cables or incorrect
switch settings are discovered, proceed as follows.

Switch the DC ON/OFF switch to the OFF position.
|

Correct the condition.

Set the DC ON/OFF switch to the ON position.
Table 2-1

Device

PDP11-V03 Switch Positions

Set to

Functian

Contrds dc power to computer.

ENABLE/HALT

ENABLE

Selectsprocessor mode

LTC ON/OFF

OFF

Contrds Line Time Clock

Power ON/ OFF

Conpfibls ac power

LINE/LOCAL
FDX/HDX

LINE
UP

Seleits operating mode
Selets Full Duplex

BAUD RATE

300

Sepcts baud rate

Switch

11V03 Front Panel | DC ON/OFF

DECwriter

DECscope

CAPS LOCK

DOWN

Power ON/OFF

CAPS LOCK

DOWN

EELLL

2-1

Siects capital letters
‘Selects capital letters

START

(PARA. 2.2)

CHECK AC

CHECK TERMINAL

POWER MONITOR

(DECwriter 1} —

(Figure 2-2)

para. 2.2.4)

(DECscope —
para. 2.2.5)

CHECK PRIMARY
POWER

(para. 2.2.1)

SCHEDULE
EQUIPMENT

SERVICING FOR

TERMINAL

CHECK DC ON
INDICATOR

(Figure 2-3)

CHECK
INTERFACE

CABLING

(para. 2.2.6)

CHECK
COMPUTER POWER

(para. 2.2.2)
(Figure 2-4)
RECONNECT
LOOSE CONNECTOR

OR RESEAT
LOOSE MODULE

CHECK RUN

INDICATOR

YES

(Figure 2-3)

SCHEDULE EQUIP

SERVICING

CHECK ENABLE/
HALT SWITCH
CYCLE DC POWER

CHECK

TERMINAL

CONNECTION

(para. 2.2.3)

RECONNECT

SECURELY
2. CYCLE DC

POWER

11-5291

Figire 2-1

Flowchart For No $ Condition

Cycling the dc power off and on should result in the system printing or displaying the “$” character. If
it does not, arrange for equipment servicing.

The troubleshooting steps in the sections that follow are referenced as necessary by the flowchart in
Figure 2-1.

Check Primary Power

2.2.1

If the ac monitor lamp (Figure 2-2) does not light, check the ac line voltage at the power outlet where
the PDP-11V03 system is plugged in. If the voltage is correct, reset the ac breaker on the rear of the
computer cabinet. To do this, switch the breaker off and then back on again, making sure it is fully in
the ON position.

/AC MONITOR LAMP

CIRCUIT BREAKER\

POWER DISTRIBUTION PANEL

C)K//

’///CORD

SYSTEM

(Efl)

POWER

TN
A

<»

9 |

HINGED FAN PANEL

|
FANS
=
A |

)

AC LINE

;

(115V,20A;

230V,10A)

HINGED CONNECTOR PANEL

CONNECTOR PANEL

& [

g T e

D
]

MATE-N- LOK

j<kf—~f::;7’C0NNECT0R

—F1 )

\\/

CONNECTOR ACCOMODATIONS

FOR FUTURE SYSTEM EXPANSION

I/0 FROM
LA36

VT52

H-3713

Figure 2-2

Rear View of Computer Cabinet
'

Check Computer Power

2.2.2

If the ac monitor lamp is lit but the DC ON indicator does not light when the DC ON/OFF switch 1s

switched to ON, check the computer power as follows.

Switch off dc power at the DC ON/OFF switch (Figure 2-3) and switch off ac power at the

circuit breaker (Figure 2-2).

Locate the hinged panel holding the fans (Figure 2-2). Remove the Phillips-head screw that

Check the fuse and switch on the rear of the computer (Figure 2-4). The switch should

secures it, and swing the fan panel open.
always be in the ON position.

Trace the ac power cable from the computer to the power distribution panel. Ensure it 1s

plugged in securely.

2-3

DC ON INDICATOR

RUN INDICATOR
8115-10

Figure 2-3

DC ON and RUN Indicators

PDP-11/03 (REAR VIEW)
on

AC POWER
TERMINAL

SHIELD

@\————————————

| OFF

—

x—

—

—-

FUSE :

115V, 60Hz-5A

—

AC SWITCH

230V,60Hz-2.5A
11-5315

Figure 2-4

Computer ac Power Switch and Fuse

2.2.3 Check Terminal Cable Connection
Refer to Figure 2-2. Check the connector on the cable from the terminal. It should be secure and
latched into the connector on the computer cabinet.
2.2.4

DECwriter IT Checks
Switch the LINE/LOC switch to the LOC (local) position (Figure 1-4). This disconnects the terminal
from the computer. In this “off-line” setting the DECwriter II should perform as an electric typewriter, printing what the operator types. If it does, the problem is probably in the computer. If it does
not, the problem is in the terminal. Check the ac line power outlet to verify that the DECwriter is
getting primary power. If the machine is receiving power, the internal cooling fans should be running.
Also, there should be a movement of the print head when power is cycled off and on. If this movement
does not occur, check the fuses. These are located in the front of the supporting pedestal (see Figure
2-5).

2-4

AC LINE FUSE

FUSE RATING
115V.

3A SB

230V.

1.5A SB

Figure 2-5

2.2.5

SERVO FUSE
7622-21

DECwriter II Fuse Locations

DECscope Checks

The DECscope should display a flashing cursor in the upper left-hand corner of the screen. This
should appear within 30 seconds of turn on. If it is not visible, refer to Figure 2-6 and check the
following.

Check the circuit breaker. If it is tripped (protruding), switch off the ac power and reset the
breaker by pressing it in. Switch the power back on.

Check the intensity control. Movement of the lever should control the brightness of the
cursor.

Ifthe cursor is still not visible, check the ac power line at the outlet the DECscope is using.

W\\\\\\\x\\i flW

ON/OFF SWITCH

INTENSITY CONTROL
VT52 CIRCUIT BREAKER

(WHITE BUTTON)
11-5292

Figure 2-6

DECscope Power and Intensity Controls

If the cursor is present, but the “$” is not, check the baud rate control switches as follows.
1.

Tip the DECscope up on its back side (Figure 2-7) and locate switches S1 and S2 (Figure
2-8).

Check to ensure that switch S1 is in position 3 and S2is in position G. The position of these
switches may be checked as follows.
a.

b.
c.

Switch off the ac power.

Using a screwdriver, set the shaft of S1 fully counterclockwise (position 1) and then

turn it two positions clockwise (position 3).

Ensure that S2 is turned to its fully clockwise position (position G). The circuits that
interface the DECscope to the computer are configured to operate at 9600 Baud. A
placard on the bottom of the DECscope explains the switch settings.

EEILLD

2-6

Figure 2-7

Tipping the DECscope

2-7

BAUD RATE SWITCHES

7966-1

Figure 2-8

Bottom View of DECscope

If either switch S1 or S2 was not in the correct position, this could be the cause of the problem. If they
were in the correct positions, check the terminal off-line as follows.
1.

Turn S1 counterclockwise to position 1. This disconnects the DECscope from the computer,

placing it off-line.

Tip the terminal back down to its normal position and switch on the power.

2-8

2.2.6

After warmup (about half a minute), the flashing cursor should appear at the top left of the
screen (HOME position). Type characters on the keyboard and observe that they are displayed on the screen. If they are not, the problem is in the DECscope. If they are, the
problem may be in the computer. Turn off the power and return S1 to position 3.
Check Interface Cabling

The terminal is interfaced to the computer by an interface circuit located on a circuit card which plugs
into the computer. This circuit card (the M7940 serial line unit module) is connected by a cable to the
connector in the rear of the computer cabinet. If this cable is loosened during shipping, the terminal
will not respond to the computer. Check the cable connection as follows.
1.

Switch the DC ON/OFF switch to the off position.

Grasp the front panel of the computer (Figure 2-9) and pull it off. It is designed to pop off;
there are no screws to remove.

11-5295

Figure 2-9

Removing Snap-off Panel
2-9

Refer to Figures 2-10 and 2-11, and locate the M7940 serial line unit.

PROCESSOR
KD11-F (M7264)

SERIAL LINE UNIT
|

RAM

4K MOS
MSVI1-B ~

(M794 4)

[

]

////

— '%@__

~HC &

DLVI1 (M7940)

FLOPPY DISK
CONTROL RXVI{

| DIAGNOSTIC, BOOTSTRAP
TERMINATOR REViI-A

(M9400-YA)

(M7946)

—~—

EMPTY
|

' g

H9270 BACKPLANE —
[
SPACE FOR /’

T EMPTY

BA11-ME /MF
EXPANDER BOX

i-3721

Figure 2-10

PDP-11V03 A/E Module Locations

]

1
KD11-R PROCESSOR

(

AND MEMORY

SERIAL LINE UNIT

DLV 11 (M7940)

__—T

—

EMPTY /
\\

~ \

FLOPPY DISK
CONTROL

RXV11 (M7946)
DIAGNOSTIC, BOOTSTRAP
TERMINATOR REV11-A

(M9400-YA)

11-5293

Figure 2-11

PDP-11V03 F/H Module Locations

HEL

2-10

Ensure that the cable connector is secure in its socket, and that the module is plugged into

Reinstall the front panel of the computer by lining it up with the cabinet and pressing it on.

Switch dc power on.

2.3

the computer backplane all the way. The “THIS SIDE UP” label should be up.

NO “.” RESPONSE AFTER BOOTSTRAPPING

If the *$” prompt character is printed when dc power is switched on, the problem is likely to be either
the disk drive or the computer. Figure 2-12 is a flowchart for checking first the computer and then the
disk drive system. The flowchart refers to the following paragraphs, which explain the steps in the
flowchart. If this sequence of checks locates the problem, cycle the dc power off and on and then try
again to bootstrap the disk drive. If the problem is not located, arrange for equipment servicing.
Perform XM and XC

2.3.1

The computer has two small diagnostic programs built into the REV1 1-A hardware module. One is a
memory test called XM. The other is a processor test called XC. The computer may be checked by
running these two tests as follows.

Cycle dc power off and then back on to get the “$”* prompt character.

Run the memory diagnostic by typing XM after the “$” prompt character:
$XM <CR>

The computer should run the test, then print another §.

Run the processor diagnostic by typing XC after the “$”* prompt character:
$XC <CR>

The computer should run the test, then print another §.

If either of these tests fails, the computer will not print the $. In this case call Digital Field Service. If
the tests pass, the computer is probably working properly. Proceed with the steps in Figure 2-12 to
check the disk drive system.

Check the Diskette Label

2.3.2

Open the door on disk drive 0 and pull out the diskette (Figure 2-13). The diskette should be labeled
“RT-11 V02C Disk 1 of 2’ or “RT-11 V03-01 Disk 1 of 2.” If it is not, locate the correct diskette and
load it into the left-hand disk drive.

Check Disk Drive Controller Cabling

2.3.3

The disk drive system is controlled by circuitry on a card that plugs into the computer. This card (the
M 7946 Floppy Disk Control module) is connected to the disk drive system by a cable. To check the
controller connections, proceed as follows.

1.
2.

Switch off dc power at the DC ON/OFF switch (Figure 2-3) and switch off ac power at the

circuit breaker (Figure 2-2).

Grasp the front panel of the computer and pull it off (see Figure 2-9). It is designed to pop
off; there are no screws to remove.

EEIE

2-11

START

(para. 2.3)

PERFORM
XC AND XM

(para. 2.3.1)

SCHEDULE
EQUIPMENT

SERVICING

CHECK THE
DISKETTE

LABEL

(para. 2.3.2)

CORRECT

LOAD

DISKETTE

RT-11
DISK 1 of 2

CHECK DISK
DRIVE CONTROL
CABLING

(para. 2.3.3)

RECONNECT
PLUG OR RESEAT
MODULE, AS
NECESSARY

CHECK DISK

DRIVE POWER

(para. 2.3.4)

REPLACE FUSE
NO

OR RESET
BREAKER.

SECURE
CONNECTIONS

YES

SCHEDULE EQUIP

SERVICING

11-5294

Figure 2-12

Flowchart for No ¢.”” Condition

2-12

08-1531

Figure 2-13

Removing the Diskette

Refer to Figures 2-10 and 2-11, and locate the floppy disk control module.

Ensure that the cable connector is secure in its socket, and that the module is plugged into

the computer all the way.
5.

Reinstall the front panel of the computer by lining it up with the cabinet and pressing it on.

Switch on the ac breaker and then switch on the dc power.

2.3.4

Check Disk Drive Power

The ac power to the disk drive can be checked as follows.
1.

Switch off dc power at the DC ON /OFF switch (Figure 2-3) and switch off ac power at the

circuit breaker (Figure 2-2).

Locate the hinged fan panel. Remove the Phillips-head screw that secures it and swing the
panel open.

Refer to Figure 2-14. Check the fuse (or circuit breaker) on the rear of the disk drive unit.

Check the connectors at P1, P2, and P3. They should be plugged in securely.

Trace the ac power cable from the disk drive to the outlet inside the rear of the computer
cabinet. Ensure that it is plugged in securely.

2-13

FUSE—\

fi-— POWER HARNESS

A P2

—*P3
<+— LINE CORD

TYPICAL

60Hz

MODELS

CIRCUIT BREAKER—\

%—POWER HARNESS

o2
<«—— LINE CORD
TYPICAL

50Hz

MODELS
11-4522

Figure 2-14

Rear View of Floppy Disk Drives

2-14

CHAPTER 3

DIAGNOSTIC PROGRAMS

3.1

GENERAL

3.2

HARDWARE-IMPLEMENTED DIAGNOSTICS

The diagnostic programs for the PDP-11V03 include two software systems plus several small programs
that are implemented in hardware. The RXDP and DEX/X11 software systems are described briefly
in Paragraph 3.3 of this chapter, and are described in detail in XXDP User’s Manual (part number
MAINDEC-11-DZQXA-I-D and DEC/X11 User’s Documentation and Reference Guide(part number
MAINDEC-11-DXQBA-U-D). The hardware routines include the REV11-A programs and On-line
Debugging Technique (ODT) commands. These are described briefly in Paragraph 3.2 of this chapter
and are explained in more detail in Microcomputer Handbook (part number EB-065831 76 090/53).

The ODT and REV11-A programs do not require the loading of any software. They are built into the
computer hardware, and are available upon power up.
ODT

3.2.1

The most basic way of communicating with the computer is through the hardware ODT. The commands in this program are a subset of the commands
in the larger software ODT program (ODT.OBJ)
which operates under the RT-11 operating system. The software ODT program is used for debugging
software. The hardware-implemented ODT is primarily for hardware-oriented diagnosis of problems.
CAUTION

The hardware ODT can alter programs. Therefore
the master diskettes should be copied and set aside
before using ODT. Instructions for copying diskettes
are presented in Paragraph 3.3.

The On-line Debugging Technique functions only when the computer is in the console emulator mode.
This mode of operation is used instead of switches and lights on a console panel to communicate
directly with the computer. In the console emulator mode, commands are typed on the keyboard
instead of set in switches. Responses are displayed on the DECscope or printed by the DECwriter,
The computer enters the console emulator mode in
instead of lighting lamps on a computer console.
any of the following ways.

Operator types the command OD after the “$’ prompt character.

Operator presses the BREAK key.

Operator switches the ENABLE/HALT switch to the HALT position.

The program executes a HALT instruction.

An error condition is detected by the computer.

o JTENE

3-1

Upon entering the console emulator mode, the computer sends the following to the terminal.
<CR><LF>
nnnnnn <CR><LF>

@
Where CR is the carriage return command, LF is the line feed command, and nnnnnn is the location of
the next instruction to be executed. The @ is the prompt character used by the ODT program.
Table 3-1 describes ODT commands. All ODT commands must be typed with the CAPS LOCK key
depressed. Characters printed by the computer are shown underlined. Characters typed by the operator are not underlined.

Note also that all commands and characters are echoed by the computer and that illegal commands
will be echoed and followed by ?, followed by CR, followed by LF, followed by @. Lower case letters

are not legal for ODT commands. If a valid command character is received when no location is open
(e.g., when having just entered the console emulator mode), the valid command character will be
echoed and followed by a ?, CR, LF, @. Opening nonexistent locations will have the same response.
The computer always prints six numeric characters. However, the user is not required to type leading
zeros for either addresses or data.

NOTE
If the command L
<CR> is typed, the computer will
hang up. To get out of this condition toggle dc power
off and on.
3.2.2 REVI11-A
The REVI11-A programs are stored in read-only memories on a module in the computer. The REV11-A
module contains diagnostic programs and the bootstrap program for the floppy disk drive system.
Each time the PDP-11V03 is switched on, the REVI1-A hardware automatically performs a short
routine to check out the computer. When it passes this quick check it prints the “$”’ prompt character.
At this time the operator may enter any of the commands listed in Table 3-2. The DX commands
bootstrap the disk drive. The XC and XM commands perform checks on the processor and the memory. If one of the programs fails to function properly, the computer will print an error message in the
form:
nnnnnn

@
The @ sign indicates that the computer has halted and control has passed from the REV11-A program

to the console emulator mode, which simulates some of the software ODT commands. The number
(nnnnnn) indicates why. If the system prints an error message in response to an REV11-A command,
arrange for equipment servicing. For more information about the meanings of the error messages,

refer to the sections on ODT and REV11-A in Microcomputer Handbook (DIGITAL number
EB-065831 76 090/53) or to volume one of the REVII Field Maintenance Print Set (part number

MP00073).

If an invalid command is entered following the “$” prompt character, the system will respond with a ?
after the command. It will then advance a line and issue a new $. For example:

$XJ2
$

3-2

Table 3-1

ODT Program Commands
NOTE

Examples presented in this table use the following conventions:

1. Characters printed or displayed under the control of
the computer are underlined. Characters typed by
the operator are not underlined.

2. Characters enclosed by <> are non-printing

commands. For examples, < CR > indicates that the
operator types carriage return, and < CR > indicates

that the computer performs a carriage return.

Command

Function

Opens a location (memory or general purpose register). The / command is

(slash)

normally preceded by a numeric location identifier. Before the contents are

printed, the console will issue a space character.
Example:

@1000/021525
where:

@ = ODT prompt character
1000 = octal location in address space to be opened

/ = command to open and exhibit contents of location
012525 = contents of octal location 1000
NOTE

If / is used without a preceding location identifier, the address of
the last opened location will be used. This feature can be used to
verify data just entered into a location.

CR
(carriage

This command is used to close an open location. If the contents of a location are
to be changed, CR should be preceded by the new value. If no change to the

return)

location is necessary, then CR will not alter contents.
Example:

@1000/012525 <CR> <LF>
@/012525
OR

Table 3-1

Command

Function

Example:

ODT Program Commands (Cont)

(carriage

@1000/012525 15126421 <CR> <LF>

return) (Cont)

@/126421
where:

CR is used to close location 1000 in both examples. Note that in the second
example the contents of location 1000 was changed and that only the last 6
digits entered were actually placed in location 1000.
LFE

This command is also used to close an open location or GPR (general-purpose

(line feed)

location or GPR and open the location + 2 or the GPR + 1. If the contents

of the open location or GPR are to be modified, the new contents
should precede the LF operator.
Example:

@ 1000/ 012525 <LF > <CR>

001002/ 005252 <CR> <LF>

@
where:
LF is used to close location 1000 and open location 1002.

The “/A” command is also used to close an open location or GPR (general(up arrow)

purpose register). If entered after a location or GPR has been opened, it will
close the current location or GPR and will open the previous location (current

location -2, or GPR -1). If the contents of the open location or GPR are to

be modified, the new contents should precede the “A” command.
Example:

@ 1000/ 012525A <CR><LF
>

000776/ 010101 < CR><LF
>
@
where:

“/\ used to close location 1000 and open location 776.

- :5 ]+

;

3-4

Table 3-1

ODT Program Commands (Cont)

Command

Function

Once a location has been opened, the @ command is used to close that location

(at sign)

and open a second location, using the contents of the first location as an
indirect address to the second location. That is, the contents of the first
location points to the second location to be opened. The contents of the first
location can be modified before the @ command is used. This command is
useful for stack operations.
Example:

>
> <LF
@ 1000/ 000200 @ <CR
<LF>
<CR>
000137
000200/

@
where:

@ is used to close location 1000 and open location 200.
Note that the @ command may be used with either GPRs or memory contents.

(underline)

This command is used to close one location and open a second location. The
address of the second location is the sum of the following:
1. The address of the first location

2. The contents of the first location
3. 2

This is useful for relative instructions where it is desired to determine the
effective address.
Example:

@1000/ 00200 —<CR><LEF >
> LF
001202/ 002525 <CR

@
where:

__isused to close location 1000 and open location 1202. 1202 is the sum of
1000 (the address of the first location) + 200 (the contents of the first

location) + 2. This command cannot be used if the open location is a
general-purpose register.

TEN

3-5

Table 3-1

ODT Program Commands (Cont)

Command

Function

$ or R

These commands are used to designate the internal registers. Either command
can be followed by a register value (0 through 7) which will allow that specific
general-purpose register to be opened or changed. The register value must be

followed by the / command.
Example:

@§n/012345 <CR> LF

@
where:

$ = register designator. This could also be R.
n = octal register O - 7.

012345 = contents of GPR n.
Note that the GPRs once opened can be closed with either the CR, LF, A ,

or @ commands. The __command will also close a GPR, but will not perform
relative addressing.

$ S

By replacing “n” in the above example with the letter S the processor status
word will be opened. Again either $ or R is a legal command.

Example:

@95 S/000200 <CR> LF

&
where:

$ = GPR or processor status word (PSW) designator
S = specifies processor status register and differentiates it from the GPRs.
000200 = eight bit contents of PSW; bit 7 = 1, all other bits = 0.
Note that the contents of the PSW can be changed using the CR command but

bit 4 (the T bit) cannot be modified using any of the ODT commands.
G

The “G” (GO) command is used to start execution of a program at the

(go)

memory location typed immediately before the “G”’.
Example:

@ 100G
or

@ 100G

Table 3-1

ODT Program Commands (Cont)

Command

Function

P
(proceed)

The “Proceed” command is used to continue, or resume, execution at the
location pointed to by the current contents of the Program Counter
(R7).

Example:
@P

M
(maintenance)

The “Maintenance’ command prints data that indicates how the computer
entered the HALT mode. This command is used for hardware maintenance, and
requires interpretation. Refer to Microcomputer Handbook (Digital part number
EB-065831 76 090/53) for further information.

DELETE Key | While DELETE is not actually an ODT command, the computer does support this
character. When typing in either address or data, the user can type DELETE to
erase a previously typed character. The computer will respond by printing a
“\ ”’ (backslash) for every DELETE typed.

Example:

\ 6 <CR>LF
@ 000100/ 077777 123457 <DELETE>
@ 000100/ 123456

In the above example, the user typed a 7" while entering new data and then
typed DELETE. The console responded with a “\ ”” and then the user typed a
“6” and CR. Then the user opens the same location and the new data reflects
the DELETE. Note that if DELETE is issued repeatedly, only numerical
characters are erased and it is not possible to terminate the present console mode.
CAUTION

If more than six DELETE’s are consecutively typed,
and then a valid location closing command is typed,
the open location will be modified with all zeros.
The DELETE command cannot be used while entering
a register number. R2\ 4/ 012345 will not open
register R4; however, the DELETE command will cause
ODT to revert to memory mode and open location.4.

SELL

3-7

Table 3-1

ODT Program Commands (Cont)

Command

Function

The “L” (Bootstrap Loader) command is typically used with paper tape. The

(bootstrap

command will cause the processor to determine the amount of memory available
and then load a program, making the most efficient use of memory. The program
on the device specified for loading must be in bootstrap loader format (e.g., the
Absolute Loader program). The device is specified by typing the address of its

input control and status register (RCSR) immediately before the “L” command.
Example:

@ 177560L

@
CAUTION

Incorrect use of the “L”” command can hang up the
system. If this occurs, cycle dc power off and on.

Table 3-2

REV11-A Commands

Command

Function

ODT. This command places the computer into the console emulator mode,
and thereby transfers control to the ODT program. This enables the operator
to examine and/or modify memory and register locations. If the operator
does not alter the Program Counter (PC) while using the ODT program,
control may be returned to the REV11 program by entering the ODT “P”
(Proceed) command. The computer will respond by displaying the *“$”
prompt character. If the PC has been altered, the operator can start program
execution by entering the starting address 165006 and the “G” (Go) commands as follows
@ 165006G

3
The computer responds by displaying the ““$”’ prompt character on a new
line, signifying that another REV11 command can be entered.
XM <CR>

Memory Diagnostic Program. After successfully completing this program
the computer displays the prompt character §$. If the test fails, the computer
will enter the console emulator mode and print out an error message.

The memory test consists of an address test and a data test. After the tests the
memory is left with the vector page set to halt on interrupts or traps, and the
rest of memory set to all Is.

FEEILE

3-8

Table 3-2

REV11 Commands (Cont)

Command

Function

XC <CR>

Processor Diagnostic Program. This is a memory-modifying instruction test.
Successful execution of the diagnostic program results in the “$” prompt
character being displayed on the console device. If the test fails, the computer

will enter the console emulator mode and print an error message.

DX <CR>
or
DX0<CR>

Floppy Disk System Bootstrap. Typing either of these commands causes the
REV11-A to boot disk drive 0. This assumes that the drive has been loaded
with a diskette formatted for use with the PDP-11V03 system. When the
command is entered the computer first performs the XC and XM diagnostic
programs and then, upon successful completion of these, executes the bootstrap program for the disk drive. If any errors are detected, the computer will
enter the console emulator mode and display an error message. If the sequence is successful, the REV11-A program will transfer control to the system program on the diskette. Normally this will be a monitor program, and
the computer will issue a

DX1 <CR>
|

3.3

*“.”

prompt character.

Floppy Disk System Bootstrap. This command is similar to the DX or DXO,
with the exception that it bootstraps disk drive 1 instead of disk drive O.

DIAGNOSTIC SOFTWARE

The PDP-11V03 system includes two separate diagnostic software packages: RXDP and DEC/X11.
The equipment uses only one of these systems at a time. The RXDP package is a subset of the larger

XXDP family of diagnostic programs used for the PDP-11 family of computers. RXDP programs are
configured for use on an RX01 floppy diskette-based system. They are loaded individually and run one
at a time to diagnose problems in system components. DEC/X11 programs, by contrast, are run as a

group to verify the interaction of system components.
3.3.1

RXDP

The RXDP package includes several diskettes. In each diskette envelope is a small sheet that lists the
contents of the diskette. The contents of a diskette can also be found by looking up its number in the
XXDP User Manual (part number MAINDEC-11-DZQXA-I-D). That manual also describes in detail
how to use the monitor and utility programs. Explanations of the individual maintenance diagnostic
programs are presented in the individual program listings. The following paragraphs gives examples of
a few basic operations.

3.3.1.1 How to Copy an XXDP Diskette (RXDP) - It is advisable to copy the original diskettes
distributed with the system and then store the masters for future reference. A diskette can be copied
from disk drive 0 to disk drive 1 or from disk drive 1 to disk drive O. It is therefore important to give
careful attention to which way the transfer is going. Transposing the source and destination commands
will cause a blank diskette to be “copied” onto the master, thereby destroying the information on the

master.

To copy a master diskette which is in disk drive O (left side) onto a blank diskette which is in disk drive
1 (right side) proceed as follows.
1.

Boot disk drive O:
$ DX<CR>

The system will print the program heading, a restart address, and a help message (see Figure
3-1). After the help message it will print the RXDP prompt character “.”.

—

nEEur-C

P TakT

BOOTED

@BORT

REDE

BRI

RELLAREL

MO
D TR

20k

CTRL

070

L1204

UMITH:

THE

FOLLOWEHG

HELF

MESSDabE

Ty RE

L.+

FOR

BET O COREDLE
F DL SO

DS RECTORY Ged DONGOEFOR SHORT DIRESTORY O COMSOLE:

Foe
TR

FOR

LA
F R
HELP MESSAGE 5

O
L

DIRELTORY

FOR

A 1 A

BHORT

B B

0 Y

LINE

RELATED DOCUMENTS

B.1

HARDWARE DOCUMENTATION

RXV11 User’s Manual EK-RXV11-OP-001

RX01/RX8/RX11 Floppy Disk System Maintenance Manual EK-RX01-MM-PRE?
Microcomputer Handbook EB 065831 76 090/53
MSV11-C User’s Manual EK-MSV11-OP-001
LA36/35 DECwriter II User’s Manual EK-LA365-OP
LA36 DECwriter II Maintenance Manual EK-OLA36-MM
DECscope User’s Manual EK-VT5X-OP
VT352 DECscope Maintenance Manual EK-OVT52-MM
LSI-11 Programmer’s Reference Card EK-04779-750200/53

B.2
B.2.1

OPERATING SYSTEM DOCUMENTATION
RT-11 Version 2

Getting Started With RT-11 (DEC-11-ORCPA-E)

RTI11-System Reference Manual (DEC-11-ORUGA-C and addenda)
RT-11 System Generation Manual (DEC-11-ORGMA-A)

RT-11 Software Support Manual (DEC-11-ORPGA-B and addenda)

RT-11 System Message Manual (DEC-11-ORMEA-A)
RT-11 System Release Notes (DEC-11-ORNRA-A)
RT-11 System Reference Card (DEC-11-ORRCA-C-D)
B.2.2

RT-11 Version 3

Introduction to RT-11 (DEC-11-ORITA-A-D)
RT-11 System Message Manual (DEC-11-ORMEB-A-D)
RT-11 Documentation Directory (DEC-11-ORDDB-A-D)
RT-11 System Generation Manual (DEC-11-ORGMB-A-D)
RT-11 System Reference Card (DEC-11-ORRCB-A-D)
RT-11 System User’s Guide (DEC-11-ORGDA-A-D)

RT-11 Advanced Programmer’s Guide (DEC-11-ORAPA-A-D)
RT-11 System Release Notes (DEC-11-ORNRB-A-D)
RT-11 Software Support Manual (DEC-11-ORPGB-A-D)

B-1

B.3

OPTIONAL SOFTWARE DOCUMENTATION

Getting Started With BASIC/RT-11 (DEC-11-LBCLA-C)
BASIC/RT-11 Language Reference Manual (DEC-11-LBACA-D-D, DN1, DN2)
BASIC/RT-11 Release Notes (DEC-11-LBRNA-A-D)
Getting Started With RT-11 FORTRAN (DEC-11-LFGDA-B)
PDP-11 FORTRAN Language Reference Manual (DEC-11-LFLRA-C-D)
RT-11/RSTS/E FORTRAN IV User’s Guide (DEC-11-LRRUA-A-D)
RT-11 FORTRAN Release Notes (DEC-11-LFRNA-A-D)
RT-11 FORTRAN Compiler (DEC-11-LRFPA-A)
FOCAL-11 User’s Manual (DEC-11-LFOCA-F-D)
FOCAL-11 User’s Manual Addendum (DEC-11-LFOCA-F-DN1)
BASIC Language Reference Manual (DEC-11-LIBBA-B-D)
MULTI-USER BASIC User’s Manual (DEC-11-LSBRA-A-D)
MULTI-USER BASIC/RT-11 System Installation
Guide (DEC-11-LIBMA-A-D)
APL-11 Programmer’s Reference Manual (DEC-11-LAPLA-A-D)
APL-11 Release Notes (DEC-11-LAPNA-A-D)
B.4

DIAGNOSTIC SOFTWARE DOCUMENTATION

XXDP User’s Manual (MAINDEC-11 DZQXA-I-D)
DEC/X11 User’s Documentation and Reference Guide (MAINDEC-11-DXQBA-U-D)

SERILLL

B-2

APPENDIX C

SYSTEM SPECIFICATIONS

C.1 MECHANICAL CHARACTERISTICS
Height
Component

Length

Width

Weight

H984-BA /B
Computer Cabinet
(including casters)

72 cm
(28.11n)

54 cm
(21.51n)

82 Kg
(180 1bs)

64 cm
(25.51n)

(with expander
box fully
loaded)

LA36 DECwriter {1

VT52 DECscope

C.2

85.1 cm
(33.51n)

60.7 cm
(24.01n)

69.9 cm
(27.5 1n)

46.4 Kg

36.0 cm
(14.11n)

69.0 cm
(27.21n)

53.0cm
(20.9 in)

20 Kg
(44 1bs)

ELECTRICAL CHARACTERISTICS

Voltage:
104 - 126 Vac
or 209 - 254 Vac
Frequency:

50 Hz+ 1 Hz
or

60 Hz+ 1 Hz

Power Consumption:

Computer Cabinet
VT52 DECscope
LA36 DECwriter II

(115V)
(230 V)

Typical (or idle)

Maximum

1100
W
W
1120
110
W
160
W

1265W
110 W
300 W

1240 W

bic 6ol

C-1

(102 Ibs)

C.3

ENVIRONMENTAL CHARACTERISTICS

Temperature:

Operating

15° to 32° C (59° to 90° F) ambient;
Maximum temperature gradient = 20° F/hr
(11.1° C/hr)

Nonoperating

-35° to 52° C (-30° to +125° F)
NOTE
Diskette temperature must be within operating temperature range before use.

Relative Humidity:
Operating

25° C (77°F) maximum wet bulb
2° C (36° F) minimum dew point
20% to 80% relative humidity (no condensation)

Nonoperating

5% to 98% relative humidity (no condensation)

Diskettes, Nonoperating

10% to 80% relative humidity (no condensation)

Magnetic Field:

Diskettes exposed to a magnetic field strength of 50
Oersteds or greater may lose data.

Fi: 185
$ A

C-2

C.4

Model Designations

RXVI11

PDP-11/03

Disk

System

Memory

Terminal

Input

Computer

Interface

System

Model

Size

Model

Power

Model

Cabinet

VTS52-AA

115V/60 Hz

PDP-11/03-EA

RXV11-BA

H984-BA

PDP-11V03-AD

8 K

VT52-AB

230 V/50 Hz

PDP-11/03-EB

RXV11-BD

H984-BB

PDP-11V03-EA

8 K

LA36-DE

115 V/60 Hz

PDP-11/03-EA

RXVI11-BA

H984-BA

PDP-11VO3-ED

LA36-DJ

230 V/50 Hz

PDP-11/03-EB

RXVI11-BD

H984-BB

PDP-11V03-FA

16 K

VTS52-AA

115 V/60 Hz

PDP-11/03-KA

RXVI11-BA

H984-BA

PDP-11V03-FB

16 K

VT52-AB

230 V/50 Hz

PDP-11/03-KB

RXVI11-BD

H984-BB

PDP-11V03-FC

16 K

VT52-AC

115 V/50 Hz

PDP-11/03-KA

RXV11-BC

H984-BA

PDP-11V03-HA

16 K

LA36-DE

115 V/60 Hz

PDP-11/03-KA

RXVI11-BA

H984-BA

PDP-11V03-AA

PDP-11V03-HB

16 K

LA36-DJ

230 V/50 Hz

PDP-11/03-KB

RXV11-BD

H984-BB

PDP-11V03-HC

16 K

LA36-DH

115 V/50 Hz

PDP-11/03-KA

RXVI1I1-BC

H984-BA

C-3

THEE

APPENDIX D

SYSTEM HARDWARE COMPONENTS

The basic PDP-11V03 System includes the following computer modules.
M7264

Processor

(KD11-F)

M7940

Serial Line Unit

(DLV11)

M 7944

Memory

(MSV11-B)

I(i/;7955

Memory

(MSV11-C)

M7946

Floppy Disk Control

(RXVI1I])

M9400-YA

Bootstrap and Terminator

(REV1I1-A)

The system can be expanded to increase the processor functions, enlarge the memory, and control
more peripheral devices. Several optional modules are described in this section. For detailed information refer to Microcomputer Handbook or consult the Digital sales representative.
1.

Processor Expansion — The KD11-F processor has a prewired 40-pin socket mounted on its
printed circuit board that is reserved for the KEV11 option. This option increases the processor’s capability to handle the Extended Instruction Set (EIS) and the Floating Point

Instruction Set (FIS). The option is a 40-pin integrated circuit chip which is installed
on the
processor board and does not require any option position slots space on the backplane.
Option

KEVI11

Description

Extended arithmetic option and includes fixed and floating point instructions.

D-1

Serial Line Unit - Each additional device that has serial data requires a DLV11 Serial
Interface module and either a BCO5M-04 cable or a BC03L-04 cable. The cable is connected
from the module and mounted in a slot on the connector panel located on the back of the
cabinet.
Option

Description

DLV1I1

An interface module for a 20mA current loop service or an EIA-compatible device. The DLV11 contains selectable baud rates from 50 to
9600 Baud.

BCO5M-04

An interface cable to connect the DLV11 module through a Mate-NLok connector requiring a 20 mA current loop.

BCO03L-04

An interface cable to connect the DLV11 module through an RS232-C
male connector to a device requiring an EIA interface.

Parallel Line Units - Each additional device that has parallel data requires a DRV 11 Parallel Interface module and two BCO8R-XX (XX = 1, 3, 6, 10, 20, or 25 feet) cables assemblies.
Option

Description

DRVI1I

An interface with 16 input lines and 16 output lines for transferring 16bit word or 8-bit byte programmed data transfers.

BCO8R-XX

An interface cable with two 20-conductor ribbon cables and an H856
connector on each end. The cable connects between the DRV11 and the
user device.

Memory - The basic 8K x 16 bit read/write memory system can be expanded up to a
maximum of 28K x 16 bits of memory.
Option

Description

MSVI11-B

A 4K x 16 bit MOS read/write memory module.

MRVII-AA

A module with sockets that allow the user to populate the board, using
512 x 4 bit PROM /ROM chips, up to 4K x 16 bit capacity.

MRVI1I1-AC

The basic 512 x 4-bit PROM /ROM chip used to populate the MRV11AA board.

MSV11-CD

A 16K x 16-bit MOS read/write memory that has self-refreshing circuits available on the module.

NOTE
If the MSV11-CD’s internal refresh circuitry is
used, the DMA refresh jumper on the REV11-A
module must be removed. Refer to Microcomputer
Handbook.

FEn

D-2

User-designed Expansion — A versatile wire wrap module is available for user-designed circuits. The module includes bus interface logic for operation with the LSI-11 processor and
also provides adequate board area for custom circuitry.

Option

Description

DRVI11-P

LSI-11 bus foundation module.

IEEE Instrument Bus Interface — This option interfaces the computer to instruments designed to IEEE Standard 488-1975 for Digital Interface for Programmable Instrumentation.
Option

Description

IBVI11-A

An LSI-11 processor/IEEE Instrument Bus interface module.

Digital-to-Analog Converter - This D/A converter features a holding register for user control applications.

Option

Description

AAVII-A

A four-channel 12-bit digital-to-analog converter.

Analog-to-Digital Converter - This option can accommodate 16 single-ended or 8 quasidifferential inputs. Conversion is initiated by program control.

Option

Description

ADV11-A

A 12-bit successive approximation analog-to-digital converter.

Line Printer Option - Various models of the LA180 high-speed, low cost printer are available. The LA 180 DECprinter is capable of printing from 60 to 400 lines per minute, depending on line length. It prints 180 characters per second.

Option

Description

LAV11

This option includes an LA180 DECprinter, a controller module, and

an interface cable.
10.

Expander Box - The basic system has two slot positions available for adding options. By
adding an expander box the user has six additional slot positions available for a total of
eight. The expander box is available in two versions, the BA11-ME is used with 115 Vac
systems and the BA11-MF is used with 230 Vac systems. In addition to the expander box, a
BCV1B-06 jumper cable/terminator assembly is required to connect the existing backplane
to the backplane in the expander box. Some samples of an expanded system are shown in
Appendix F.

Option

Description

BA11-ME

An expansion box that includes a backplane and a power supply for use
in a 115 Vac system.

BA11-MF

An expansion box that includes a backplane and a power supply for use
in a 230 Vac system.

BCVI1B-06

The jumper cable/terminator assembly consists of two modules interconnected by a 6-foot, 40 conductor (H865-to-H856) connector cable.

D-3

APPENDIX E

SYSTEM SOFTWARE COMPONENTS

E.1

GENERAL

The major software components of the PDP-11V03 are the Operating System and Diagnostic System.
The RT-11 software kit (QJ003-AY) includes programs for writing, editing, assembling, and de-bugging assembly language programs, disk-oriented file handling and maintenance routines, and device
handlers for all options. The RXDP diagnostic and DEC/X11 exerciser programs (ZJ215-RY) provide
the capability for separately checking the performance of all standard and/or optional PDP-11VO03
devices as well as exercising the basic system and several file manipulating programs. The contents of
these two software systems are listed in the sections that follow. For detailed information refer to:
RT-11 System Reference Manual (DEC-11-ORRUGA-C)

XXDP User Manual (MAINDEC-11-DZQXA-I-D)

DEC/X11 User’s Documentation and Reference Guide (MAINDEC-1 1-DXQBA-U-D)
E.2

OPERATING SYSTEM SOFTWARE (QJ003-AY)

The RT-11 software is contained on two diskettes - DEC-11-ORTSA-E-YCI1 and YC2.
E.2.1 DEC-11-ORTSA-E-YC1

Description

Name

(See RT-11 System Reference Manual for complete information)

MONITR .SYS*

Disk Monitor (single job)

DXMNFB.SYS

Disk Monitor (foreground-background)

DP.SYS ]
RK.SYS

Device handlers (See RT-11 System Reference Manual, Chapter

RF.SYS

TT.SYS

2 and Appendix H.)

LP.SYS
BA.SYS

BATCH.SAV*

Job control language for large and long-running programs

EDIT.SAV*

Text editor

MACRO.SAV*

Macro assembler (used with EXPAND)

EEIE

*Designates items usable on basic 11V03 system

Name

Description

ASEMBL.SAV

Assembler without macro capability

EXPAND.SAV*

Processor for references in macro language source file

CREF.SAV

Used in conjunction with MACRO; produces listing with references to program symbols.

LINK.SAV

Converts object modules produced by assemblies into format
suitable for loading and execution.

PIP.SAV*

File transfer program

PATCH.SAV

Permits modifying memory image (SAV) files

LIBR.SAV*

Permits creating, updating, modifying, listing, and maintaining
library files

ODT.OBJ*

On-line Debugging Technique Program

VTHDLR.OBJ

Not applicable to 11V03 systems

DEMOFG.MAC

Demonstration foreground program

DEMOBG.MAC

Demonstration background program

SYSMAC.SML

Macro library file for 8K + systems

SYSMAC.8K*

Macro Library file for 8K systems

E.2.2

DEC-11-ORTSA-E-YC2

RKMNSJ.SYS
RKMNFB.SYS
RFMNSJ.SYS
RFMNFB.SYS

Monitors for non-11V03 systems

DPMNSJ.SYS

DPMNFB.SYS

DT.SYS

DX.SYS*

CR.SYS
MT.SYS
MM.SYS
PR.SYS
PP.SYS
CT.SYS
DS.SYS

Device handler for RXV11 (used by MONITR)

)

Device Handlers (See RT-11 Reference Manual, Chapter 2 and
Appendix H.)

*Designates items usable on basic 11V03 system

BRI

E-2

Name

Description

FILEX.SAV

Permits converting files among file-formatted devices for vari-

SRCCOM.SAV*

ous operating systems

Source compare program. Outputs difference between two ASCII files

DUMP.SAV*

Permits outputting Octal, ASCII, and RADS50 files on console

PATCHO.SAV*

Permits modifying routines that are in OBJ format

SYSF4.0BJ

Concatenated set of object modules used to produce

device

SYSLIB.OBJ

KBMAC

E.3

General terminal driver

OPTIONAL SOFTWARE
Option

Software
Title

Number

BASIC/RT11
M ULTI-USER BASIC/RT11
FORTRAN IV/RT11
SSP/11/RJ11
FOCAL/RT11
REMOTE-11/RT11
APL-11/RT11

QJ920-AY
QJ921-AY
QJ925-AY
QJ960-AY
QJ922-AY
QJ945-AY
QI907-AY

E.4

DIAGNOSTIC SYSTEM SOFTWARE (ZJ215-RY)

Program
Title

Program
Code

AAV11 Diagnostic Test

MAINDEC-11-DVAAA-A-D

ADV11 Performance Test

MAINDEC-11-DVADA-A-D

DRV1 1B Diagnostic Test

MAINDEC-11-DVDRA-A-D

DRV11B Interprocessor Exerciser

MAINDEC-11-DVDRB-A-D

[.SI-11 Basic Instruction Tests

MAINDEC-11-DVKAA-A-D

[LSI-11 EIS Instruction Tests

MAINDEC-11-DVKAB-A-D

[LSI-11 FIS Instruction Tests

MAINDEC-11-DVKAC-A-D

*Designates items usable on basic 11V03 system.

Program

Title

Code

M.C. 0167

MAINDEC-11-DVAC-A1/01

LSI-11 Traps Test

MAINDEC-11-DVKAD-A-D

DL‘V11 Test

MAINDEC-11-DVKAE-B-D

DRVI11 Test

MAINDEC-11-DVKAF-B-D

LSI-11 4K System Exerciser

MAINDEC-11-DVKAH-A-D

KWV11A Diagnostic

MAINDEC-11-DVKWA-A-D

DEC/X11 Monitor Module Library

MAINDEC-11-DXQLA-G-D

M.C. 0664

MAINDEC-11-DXQLA-G105

DEC/X11 General Products Module

MAINDEC-11-DXQLB-K-B

Library No. 1
DEC/X11 General Products Module

MAINDEC-11-DXQLC-K-D

Library No. 2
DEC/X11 Communication Option Module

MAINDEC-11-DXQLD-L-D

Library No. 1
DEC/X11 Lab and Industrial Options

MAINDEC-11-DXQLG-1-D

Module Library No. 2
DEC/X11 New Options Library No. 2

MAINDEC-11-DXQLI-E-D

MOS/Core Memory Exerciser For 0
to 124K with or without parity bits

MAINDEC-11-DZKMA-B-D

LA36 Terminal (DL11 and KL11 interface)

MAINDEC-11-DZLAC-C-D

M.C. 0236

MAINDEC-11-DZLAC-C1/01

PDP-11 ROM Bootstrap Terminator
(M9301 M9400)

MAINDEC-11-DZM9A-A-D

Program

Title

Code

RX11 System Reliability Test

MAINDEC-11-DZRXA-E-D

RX11 Interface Diagnostic

MAINDEC-11-DZRXB-E-D

VT50A, B, M 52 Acceptance Test

MAINDEC-1 1-DZVTC-C-D

M.C. 0243

MAINDEC-11-DZVTC-C1/02

M.C. 0377

MAINDEC-11-DZVTC-C2/03

RXDP No. 7 System Exerciser No. 1

MAINDEC-11-DZZGG-D-YB

RXDP No. 25 LSI Floppy 11V03

MAINDEC-11-DZZGY-C-YB

RXDP No. 31 LSI-11 Floppy No. 2

MAINDEC-11-DZZHE-A-YB

E-5

APPENDIX F

SYSTEM CONFIGURATION AND EXPANSION

F.1

PRIORITY CHAINING

Device priority is determined by the position of the module in the computer backplane. A signal passes
through each module in turn forming a “daisy chain’ through them. The closer a module is to the
processor, the higher its hardware priority in the daisy chain. Figure F-1 shows the priority of the
backplane slots, the numbers in circles indicating order. The priority chaining scheme requires that
there be no empty slots between modules, as this would break the chain.

M7264 PROCESSOR (KD11-F)

M7944 (MSV11-B)

M7940 (DLV11)

M7946 FLOPPY CONTROL (RXV11)

M9400-YA (REV11-A)

EMPTY

’
¢
11-3718

Figure F-1

F.2

PDP-11V03 Basic System Backplane - Module Side

BUS TERMINATION

The REV11-A bootstrap and terminator module must be the last module (lowest priority) after all
options are installed. When installing optional modules the user must remove the REV11-A module
A), install the options in consecutive order of slot positions, and then install the
(labeled M9400-Y
REV11-A module in the next slot position available.

The REV11-A is a direct memory access (DMA) module. If an additional DMA module is to be
installed, there are several constraints which must be observed. Refer to Microcomputer Handbook
for the details of REV11-A installation.

F.3

EXPANSION

Figure F-2 shows two varieties of 16K PDP-11V03 systems. Models 11V03-A and 11VO3-E use three
4K MSV11-B memory modules. These are refreshed by the REV11-A module. Models 11V03-F and
11V03-H use one 16K MSV11-CD memory module. This module has its own refresh circuitry.
F-1

M7264 PROCESSOR (KD11-F)
M7944 4K MEMORY (MSV11-B)

M7944 4K MEMORY (MSV11-B)

M7940 SERIAL LINE UNIT (DLV11)

M9400-YA BOOT/TERMINATOR (REV11-A)

(a.)

| M7946 FLOPPY DISK CONTROLLER (RXV11)

11V03-A/E 16K SYSTEM

(M72§4-YA)
KD11-R PROCESSOR

(M7955-YD)

(b.)

M7940 SERIAL LINE UNIT (DLV11)

M7946 FLOPPY DISK CONTROLLER (RXV11)

SPARE

M9400-YA BOOT/TERMINATOR (REV11-A)

11VO3-F/H 16K SYSTEM
11-5302

Figure F-2

Examples of 16K x 16-Bit Systems

Either system can be expanded by using a BCV1B-06 expander cable and a BA11-ME or MF expander
box. The BCV1B plugs into the last slot of the computer backplane and the first slot of the expander
box backplane (Figure F-3). Two double-height slots are used, and should be subtracted from the total
number of slots available.
MSVI11-B memories should not be used as bank zero if it is desired to ““power up” to an active
program. If MSV11-B and MSV11-CD memories are mixed in the same system, the MSV11-CD’s

internal refresh circuit should be disabled. Refer to MSV11-C User’s Manual (part number EKMSV11-OP).

(M7264-YA)

KD11-R PROCESSOR

M7955-YD)
M7955-YD 16K MEMORY (MSV11-CD)

7////////////////

M7946 FLOPPY DISK CONTROLLER (RXV11)

BCV1B-06 JUMPER/CABLE

TERMINATOR OPTION

‘

77777777777 777777/

M7940 SERIAL LINE UNIT (DLV11)

M9400-YA BOOT/TERMINATOR (REV11-A)

M7940 SERIAL LINE UNIT (DLV11)

SPARE

SPARE
11-5303

Figure F-3

2K Two-User Expanded System

EELLR

F-2

Reader’'s Comments
PDP-11V03 System Manual
EK-11V03-TM-002

Your comments and suggestions will help us in our continuous effort to improve the quality and usefulness of
our publications.

What is your general reaction to this manual? In your judgment is it complete, accurate, well organized, well
written, etc.? Is it easy to use?

What features are most useful?

. What faults do you find with the manual?

Does this manual satisfy the need you think it was intended to satisfy?
Does it satisfy your needs?

Why?

Would you please indicate any factual errors you have found.

Please describe your position.

Name

Organization

Street

Department

EmLL

]

City

State

Zip or Country

FIRST CLASS

PERMIT NO. 33
MAYNARD, MASS.

BUSINESS REPLY MAIL

NO POSTAGE STAMP NECESSARY IF MAILED IN THE UNITED STATES
Postage will be paid by:

Digital Equipment Corporation

Technical Documentation Department

i b

Maynard, Massachusetts 01754