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Document:	DECkit11-M Assembly and Installation Manual
Order Number:	EK-K11M-IN
Revision:	001
Pages:	38
Original Filename:

OCR Text

DECKkit11-M assembly
and installation manual

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EK-K11M-IN-001

- DECkit11-M assembly

and installation manual

digital equipment corporation . marlborough, massachusetts

1st Edition, March 1975

Copyright © 1975 by Digital Equipment CorpOfatiOn
The material in this manual is for informational
purposes and is subject to change without notice.

Digital Equipment Corporation assumes no respon-

sibility for any errors which may appear in this‘
manual.

Printed in U.S.A.

The following are trademarks of Digital Equipment

Corporation, Maynard, Massachusetts:

DEC

" PDP

FLIP CHIP

FOCAL

DIGITAL

COMPUTER LAB

UNIBUS

CONTENTS -

Page
CHAPTER 1

INTRODUCTION

1.1

GENERAL . ................. O
BASIC DATATRANSFER . . . . . .
it
e
e
i e

1.2

1-1
1-1

1.4

SPECIFICATIONS . ... ........ o
1-2
RELATED LITERATURE . ... .. ...... e
e .12

CHAPTER 2

ASSEMBLY

2.1

GENERAL .................. e 2-1

1.3

2.2

UNPACKING DECKit11-M

2.3

VISUAL INSPECTION

. . . . . o

e e

. . ...
.. ... e

e e e e e e e e

2-1

Pe h e e

e e e e e e

2-1

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

e e e e

2-1

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

241

2.4

TOOLSREQUIRED

2.5

DECkit11-M DEVICE ADDRESS SELECTION (M105)

2.6

DECkit11-M INTERRUPT VECTOR ADDRESS SELECTION M7821)

. . ...
.e

2.7

UNIBUS REQUESTS (G7361)

e e

2-2

2.8

MODULE M1621 JUMPER SELECTION

. . . . . .. ... . ... ... ... .... L.

2.9

MODULE M1621 PULSE GENERATOR ADJUSTMENT

2.10

MODULE M1623 JUMPER SELECTION

. . . . . . o

e e e e

e e

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

2-4

. . ... ... ... ...... ee e e e e e 24

2.11

MODULE M1623 PULSE GENERATOR ADJUSTMENT

e e e e e

2-4

2.12

MODULE INSTALLATION

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

ee e e e e e e

2.13

- DECKkit11-M VARIATIONS

. .. .. e e

e e

2-5

CHAPTER 3

INSTALLATION

3.1

GENERAL

3.2

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

3.2.1

UnibusLoading

e e

. . . . . . ot ottt e

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

L e 3-1

it et R

e e

3.2.2

Priority Requirements

3.2.3

Space Requirements

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

e e e e e e e e e e e e

3.2.4

Power Requirements

. . . . .. e

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

CABLING
..
............. e e e e e

oL o
e

3.3.1

UnibusCables

. . . . . . . . .

Power Cables

. .. .. .. ... e

e e e

3.3.3

User I/OCables

CINSTALLATION

. . . . . . . o o o

o
. . . .

e e

3-1

3-1
3-1

3-1

e e e e e

3-1

e e e e e e e e e

e e e e e e

3.3.2
3.4

SYSTEM CONSIDERATIONS

. . . .. e e e

3-2

e e e e e

3-2

e e e

3.5

INITIAL TURN-ON

e e e

e e e e

3-2

CHAPTER 4

BASIC OPERATION

4.1

GENERAL

4.2

FUNCTIONAL DESCRIPTION (Figure 4-1)

. .. ...
.. .. e P

4-1

4.2.1

User’s Device to Unibus Data Transfer

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

4-2

4.2.2

Unibus to User’s Device Data Transfers

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

. . . . . . . .

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

INPUT/OUTPUT TIMING

APPENDIX A

DECkit11-M PARTS LIST

APPENDIX B

MODULE M1623 OUTPUT CONNECTOR PIN ASSIGNMENTS

APPENDIX C

MODULE 1621 INPUT CONN ECTOR PIN ASSIGNMENTS

e e e

4-1

e e

4-2

e e e e s e e e ..

ILLUSTRATIONS
Figure No,

1-1
2-1

2-2

Title

Simplified System Block Diagram
. .. ... ... ... ... e e e e e e e e eER
DECkit11-M Device Address Select Format
. . . ... ........ e

B
2-1

G7361 Priority Jumper Plug Locations

2-3

DECkit11-M Interrupt Vector Address Select Format

Page

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

. . . .. ... ... ... [P

2-4

M1621 Module Layout . . . . ... ........ T

2-3

2-5
2-6
3-1

M1623ModuleLayout.............a........‘ ..............
DECkit11-M Slot Assignments —Module Side . . . ... ...... e
e e e
- Installation of DECkit11-M System Unit Mounting Panel
. . . . . . ...
... ... L.

2-5
2-6
33

Mounting Panel Pin Designation . . . . . . .. . ... .. ... e L.
DECKkit11-M Block Diagram . ... ... ...... e e e e e L
Module M1623 CSR Bit Assignments
. . . . . . . . v v v
v i e oo

33
4
443

3-2
41
4-2

‘4

~
|

TABLES

Table No.

2-1

22
2-3
2-4

Al
B-1

- C-1

~
-

Device Address Selection Summary

Title

e
eS

2-2

Output-Only Interface . .. ...
. e e e e ee e e e e e e e e e e e
Output-Only Interface (Relay) . . . ... .. e e e e
e
e

2-7
24T

CInput-Only INterface

. e

Page

. . . . v v v v i

e e

2-7

CDECKItIT-MParts
LSt . o v v v ooovooe et e e e e e e e e e e L

'M1621 Input Connector Pin Assignments

C-1

M1623 Output Connector Pin Assignments

. . . .. . ... ..... PR

. . . . . .. P

.N|

CHAPTER 1
INTRODUCTION

2. Control data is transferred to the user’s device from

DECKkitl 1-M, designed and manufactured by D1g1ta1 Equrp

the PDP-11 processor to control device operations.

1.1

GENERAL

ment Corporation,is an instrument I/O interface capable
of

reading 34 bits of data from peripheral instrumentation

Data transfers from the user’s devrce fo the processor are

into a PDP-11 processor, writing 24 bits of control data

handled by an M1621 DVM data input interface module.

from a PDP-11processor to perrpheral 1nstrumentat1on and

accommodating
option.

This module contains input gates whrch select and transfer

one Small Peripheral Controller (SPC)

34 bits of data from the users device to the PDP 11

Interrupt capability is supplied to inform the

processor

that input

data should be read or that the

Processor under programcontrol

perrpheral instrument is ready to accept data
The kit is intended for the PDP-11 system user who has the

capability to assemble and install the DECkit into an

The transfer of 24 bits of control data from ‘the PDP-11

existing system. DECkit11-M is designed to be compatible

processor to the user’s device is handled by an M1623

with TTL logic levels, uses simple I/O-techniques, and has
unidirectional I/O signals. Mechanically, DECkit11-M con-

instrument remote control interface module. Control data
bits are clocked into a 16-bit and an 8-bit storage register
on this module under program control, and then transferred

sists of a prewired system unit mounting panel and five

M-series modules. The kit mounts in the PDP-11 processor,

to the user’s device. Additionally, the 24 bits of control

in an expansion mounting box or in any. other suitable

data transferred to the user’s device can be read back to the

enclosure. Figure 1-1 is a simplified system block diagram

PDP-11 processor for error checking.=

of a PDP-11 utilizing the DECkit11-M interface.
1.2

BASIC DATA TRANSFER

Data transfers between the user’s device and the PDP-11

Data

processor occur when:

transfers

between

the

PDP-11

1. Data is read from the user’s device to the PDP-11 for

requests are made on priority level four.

UNIBUS

>
- DATA
IN

DECkit11
—M} paTA OUT |

USERS
pEVICE

CP-1308

Figure 1-1

and

basis using the standard Unibus handshake routine. Bus

processing.

- 11
POP
PROCESSOR

processor

DECkit11-M take place over the Unibus on a master/slave

Simplified System Block Diagram

-1

13 SPECIFICATIONS

Logic

The following spec1ficat10ns and partlculars are for informa-

TTL

tional purposes only and are subject to change without
Module Types

notice.

M-series

“Mechanical
| Loglc Panels

Environmental

One type H933-C (system umt)

Temperature
|
Storage: -40° to 66° C

" 'Dimensions

|
- Operating: 5° to 50° C (ambient at module surface)

10in. h, 16-1/2in. w, 2-1/4 in. d
(254cmh,41.9cm w, 5.72 cm d)
Weight
»

~ Relative Humidity |

4-1/21b (2. Okg)

10% to 95% non-condensing

Interconnectlons

Unibus: M920* required when DECk1t1 1-M mounts in a

Operational |

cabinet with other system units; BC11A-XX* of correct
length required when DECk1t11-M is the first unit m an

Transfer Mode

~expansion box.

level BR4

Input/Output: Two ‘required.,
BC04Z-XX* are recommended.

BCOSR-XX*‘ . or
|

Data Transfer
Parallel

Parallel

Space in existing PDP 11 processor or in an expansmn

" mountmg box.

- "-El,ectrical »

34-bit

|
data

words

from

user’s

device

from | PDP-II

DECKit11-M to PDP-11

| Mountmg Requlrement
-

Program-controlled with program mterrupts on pnorlty

24-bit

cIontrol

words

DEClqtl 1-M to user’s device.

1.4 RELATED LITERATURE
In addition to the documents associates with the PDP-11
processor in use and DECkit11-M Engineering Drawings,

“Logic Power Requirements

- +5V£5%@3.8 Anominal

the PDP-11 Peripherals Handbook and the Logic Handbook

" Loadmg |

contain information useful for installing, operating, and

Presents two Umbus loads

mamtam_mg DECkit11-M.

*Not furnished with DECkit11-M.

CHAPTER
2

ASSEMBLY

_21 GENERAL

2.4 TOOLS REQUIRED

Assembly consists of unpackrng the DECkrt from the

~shipping- container, verifying that

(

The only tools required to carry out the assembly of the

the kit is complete,

DECkit are a pair of diagonal cutters and possibly a low

~selecting the appropriate DECkit device and interrupt

wattage solderrng iron. Installatron requrres only a screw-

- vector

prewired mounting panel.

drrver

(M105)

addresses,

and installing the modules into the

2.5

UNPACKING DECkrtl l-M

Remove the kit components from the shipping carton and

(

DECkitl1-M

DEVICE

ADDRESS

SELECTION

DECkitl 1-M: contains two MIOS address selector modules

place them on a suitable. work surface Verify that the

which are used to decode the addresses for the M1621

M-series modules are the same as those in the DECkrtll -M

DVM

Parts List (Appendix A). Parts missing from the DECkit

remote control interface modules. The bus addresses of

should

these interfaces are determined by the configuration of
jumpers on the M105 address selector modules. Address

be reported to the nearest Digital

Equipment

Corporation Sales Office for replacement.

23 VISUAL INSPECTION

data

input

interface and the M1623

instrument

selector module M105 in slot EOl controls the M1623

mterface module in slot CDEFO3 Interface module M1621

After checking the shipped DECKkit components against the

in slot CDEF04 is controlled by address selector M105 in

parts list, visually inspect the modules ‘and prewired

slot FO1. Each M105 module provides decoding for four

mounting panel for signs
of physical damage, i.e., damaged

addresses. The four addresses for each M105 module are

modules (excluding address selection jumpers which may

sequentral by even numbers T

have been removed from modules during factory test),

broken casting, or cracked mounting blocks on the pre-

Normal user addresses start 'at 7640005 and progress

wired mounting panel. Inspect the mounting panel for bent

upward.

or touching wire-wrap pins. Carefully straighten any bent

address selection jumpers on both M105 modules for bits to

Sales Office for repair or replacement of damaged com-

be decoded as “ONE” bits in the DECkit addresses. The
address select format is shown
in Figure 2-1, while Table

ponents.

2-1 presents an address selection summary.

pins. Contact the nearest DigitalEquipment Corporation

08 07

Using a pair of diagonal cutters, cut out the

06 05 04

SELECTED BY JUMPERS.

. DECODED
FOR10F 4
M105 SELECT
SIGNALS
BYTE

CONTROL
CP-1309

| Figure 2-1 DECkit1 1-M Device Address Select Format

2-1

2.6

Table 2-1

INTERRUPT VECTOR ADDRESS

- DECkit11-M utilizes two interrupt vector addresses one

Address

}{Control

Function

TXXXXO0 |

Read in the Interrupt Enable
(D06), Interrupt (D07), and Overload Status (D14) bits of the
M1621 in slot CDEF04.

for the M1621 module (slot CDEF04) and one for the
M1623 module (stot CDEF03). Both addresses are generated by the M7821 interrupt control module (slot BO3)
and are determined by address selection jumpers on this
module. Jumpers on the M7821 module are to be cut out
for address bits which are decoded as “ZERO” bits in the

Load INTR .ENB flip-flop on the

TXXXX0 | OUT

DECkit11-M

SELECTION (M7821)

Device Address Selection Summary

“vector address.

M1621 in slot CDEF(04 from DOQ6.

Figure 2-2 1]lustrates the interrupt vector address select
format. Vector addresses 170g, 1745, 2705, and 2744 are

Read in 12 bits of data [D (11:00)]

7XXXX2 | IN

reserved for users. As an example, assume that the desired

via M1621 in slot CDEF04.

vector addresses for the M1621 and M1623 modules are

(1
1705 and 1744 respectively. The first two octal digits

Initiate

TXXXX2 | OUT

pulse

from

the M1621

CDEF04.

slot

user — jumper in for a binary one, jumper out for a binary
zero. In this example, the jumpers would be removed from

bits 08 and 07 and left in for bits 06 through 03. The third

octal digit (0 or 4) is represented by bit 02 and is controlled
by the M7821 module Bits OO and Ol are always zeros in .

‘vra M1621 in slot CDEF(4.

the vector address

in 6 bits of data [D (05:00)]
a Read in6
|

viaM1621 in slot CDEF04.

TYYYYO OUT

JUMPER SELECTED

Load INTR ENB flip-flop on the

7YYYYO | IN

Readin 16 bits of data [D (15: 00)]

TXXXX4 | IN

TXXXX6

and 7) of the address are represented by bits 08 through 03
determined by jumpers selected by the
~and are

EXTERNAL TRIGGER

- M1623 in slot CDEF03 from DO06.

Read in the Interrupt Enable
(D06), Interrupt (DO7), and the

O7T

18t OCTAL

three Status (D11, D13, and D14)

DIGIT

bits of the M1623 in slot CDEFO03.

2nd ocTAL
-

AS ZEROS

3'%

O.UT

7YYYY4 | OUT|

Write out

bits of data

[D (15:00)] to the 16-bit register
|
on M1623 in slot CDEF03.

Write

out-

[D (07:00)]

bits

data

to the 8-bit registers

on M1623 in slot CDEFO03.

PREASSIGNED

DIGIT

DIGIT
|

TYYYY?

ocTAL

(O OR 4)
-

|
CP-1466

Frgure 2-2 DECkit11-M Interrupt Vector Address |
Select Format

2.7 UNIBUS REQUESTS (G7361)
Both the M1621

and the M1623 modules generate an

interrupt to the PDP-11 processor on priority level four.
Although both modules interrupt on the same level, the

OUT

Notes:

Initiate the DATA STROBE pulse

from the M1623 in slot CDEFO03.

XXXX, M105 in slot FOI

YYYY, M105 in slot EO1
XXXX # YYYY

M1623 module has a slightly higher priority than the

M1621 module due to its electrical distance from the
processor. Unibus requests are applied to the bus via the
G7361 priority select module and its associated priority
jumper plugs. Two no request and two level four request
jumper plugs are supplied with DECkitl11-M. The jumper
- plugs are installed
on the G7361 module as indicated in
- Figure 2-3.

2-2

(

2.8 MODULE M1621 JUMPER SELECTION

The M1621 module contains a series of jumper leads which
-are soldered into pretinned holes on the board. These leads

Jumper

: _Usg |

Wil, W12

Selects positive- or negative-going transition of PRINT COMMAND or EOC signal

“select signals and functions for specific system applications

on the board surface between hole pairs. Figure 2-4 shows

M1621 Interrupt

-going transition clocks the Interrupt flip-

flop. Positive-going. transition clocks ‘the

Jumpers

-Use

W1, W2,

Selects either PDP-8/e or PDP-11 inter-

W3, W4,

face. W1, W3, and W13 must be in place,
and W2, W4, and W14 must be removed
for PDP-11 interfacing.

W5, W6

to clock the

flip-flop. With W11

removed and W12 in place, a negative-

the location of the jumpers. Jumpers are used as follows:

W13, W14

user’s. instrument

from

‘as determined by the user. Jumper designations are etched

flip-flop when W11 is in place and W12 is
removed.

|
LEVEL FOUR
PRIORITY.
JUMPER PLUGS

Selects one of two interrupt signals

(PART No. 5408776)

(INTR A or INTR B). With W5 in place
and W6 removed, INTR A is selected.
With W5 removed and W6 in place, INTR

—

B is selected.
67361 PRIORITY SELECT

W7, W8

Selects one

of two interrupt enable

signals (INTR ENB A or INTR ENB B).
With W7 in place and W8 removed, INTR

ENB A is selected. With W7 removed and
W8 in place, INTR ENB B is selected.
W9, W10

NO REQUEST
PRIORITY

' JUMPER PLUGS

(PART No.5410341)

Select positivé- or negative-going external

trigger pulse. Positive pulse is selected

~with W10 in place and W9 removed.

Figure 2-3

Negative-going pulse is selected with W9

G7361 Priority Jumper Plug Locations

in place and W10 removed.

e— CONNECTOR Ji
——<4—1—ONE-SHOT

PULSE ADJ

'PULSE GEN EXT CAPACITOR LUGS
|

ci8

| DG;'A‘JUMPERS W9,W10

JUMPERS W 11,W12

M1621 MODULE COMPONENT SIDE

JUMPERS W1-ws8

WI3, W14 T\

]

»Figure 2-4 M1621 Module Layout
2-3

CP-1310

[

CP-1307

2.9

MODULE M1621

PULSE GENERATOR ADJUST—

Jumper

- MENT

W13, Wi4

The M1621 module contains a one- shot pulse generator for

triggering the user’s device. Output pulse width is user-

and W14 removed, a positive pulse is

a capacitor across the split lugs indicatedin Figure 2-4. The

selected.

value of the added capamtor is obtamed from the following

Tow =

where:
|

W15, W16

0.32RC

= required capacitance in uF

W17, W18

where:

INTR

‘W19, W20

required capacitance in pF

ENB A is selected. With W17

- Selects positive- or negative-going transi-

tion of the READY signal from the user’s

selected pulse width in ns

one of two interrupt enable

is selected.

0.32RC [1+0.7/R)]

resistance in k2 (adjustable from 5.2 to

Selects

removed and W18 in place, INTR ENB B

signals

With W17 in place and W18 removed,

of the new capacitor is obtained from the

Tpw =

interrupt

signals (INTR ENB A or INTR ENB B).

Pulses shorter than 2 us can be obtained by removing the

pr =

two

INTR A is selected.

1000 pF capacitor (C18) that is factory-installed on the
M1621 module and replacing it with one of lower value.
The value

and W16 in place, INTR B is selected.

resistance in k€2 (adjustable from 5.2 to

, followmg equation:

one

With W15 in place and W16 removed,

50k by trimpot)

Selects

(INTR A or INTR B). With W15 removed

Tpw = selected pulse width in ms
R

Selects a positive or negatlve output pulse (

from the M1623 pulse generator. With
tive pulse is selected. With W13 in place

~module. Pulses longer than 12 us can be obtained by adding

W13 removed and W14 in place, a nega-

adjustable from 2 to 12 us by a trimpot (Figure 2-4) on the

. equation:

Use

device to clock the Interrupt flip-flop on
the M1623 module. With W19 in place

50k by trimpot)

and W20 removed, a positive-going transi-

tion

clocks

the

Interrupt

flip-flop.

Negative-going transition clocks the flip2.10

flop when W19 is removed and W20 is in

MODULE M1623 JUMPER SELECTION

place.

The M1623 module contains a series of jumper leads which
~ are soldered into pretinned holes on the board. These leads
select signals and functions for specific system applications

2.11

as determined by the user. Jumper designations are etched

triggering the user’s device. Output pulse width is user-

adjustable from 2 to 12 us by a trimpot (Figure 2-5) on the

Use

W1, W2,

Selects either PDP-8/¢ or PDP-11 inter-

W3, W4,

face. W1, W4, W5, W7, and W10 must be

W5, W6,

in place, and W2, W3, W6, W8, and W9

W7, W8,

must be removed for PDP-11 interfacing.

MODULE M1623 PULSE GENERATOR ADJUST-

The M1623 module containsa one-shot pulse generator for

the location of the jumpers. Jumpers are used as follows:

Jumpers

MENT

on the board surface between hole pairs. Figure 2-5 shows

module. Pulses longer than 12 us can be obtained by adding
capacitance across the split lug terminals (Figure 2-5) on
- the module board. Conversely, pulses shorter than 2 us can

be obtained by removing the 1000 pF capacitor (C38) that

is factory-installed on the M1623 module and replacing it

W9, W10

with one of lower value. The value of the new capacitors
can be determined from the equations in Paragraph 2.9.

W11, W12

Selects register preset during power-up.
-

With W11 in place and W12 removed, all

M1623 registers will clear on power up.

2.12

MODULE INSTALLATION

Module installation involves the insertion of the six DECKkit

M1623 registers will be set on power-up

modules into the proper slots on the prewired mounting

with W11 removed and W12 in place.

panel.

2-4

- CAUTION

2.13

DECkitl11-M VARIATIONS

Prewired system mounting panel BB11-M prov1des space for

- To ensure proper module mstallatlon insert the

modules so that the deep notch on each module-

mounting additional

seats against the connector block rib.

M1623)

Figure 2-6~-shows-' the DECKkit slot assignments from the
- module side. Install-the modules into the specified slots,

Small

I/O modules (M1801, M1621,

Peripheral Controllers

produce a

custom variation of DECkit11-M to suit an individual user’s
requlrements Individual modules may be ordered from the
~

nearest Digital Equipment: Corporatlon Sales Office.

- paying particular attention that modules M10S5 installed in
slots EOQ1 and FO1 are the proper modules for these slots as

address selection jumpers

Rather than using the I/O modules specified in Figure 2-6

~(Paragraph 2.5). After installation, secure the modules with

for slots C02—F02, C03—F03, and C04—F04, the user may

the ‘H852 and H853 module holders. Fasten one H853

install M1621, M1623, M1801 (16-bit relay output inter-

module holder between module locations E and F and

face, or Small Perlpheral Controller modules (module type

determined

the module

fasten the other H853 between: locations C and D. The

specified by user) into

H852 module holder is fastened between locations B and C.

combination up to a maximum of three modules.

all

three locations, or in any

Slots ABO1 and AB04 are the Unibus input/output slots.
~ The use of these slots varies with the type of installation
~

and is discussed in Paragraph 3.3.1. Slots ABCDEFO02
and
D01 are not used by DECkitl11-M, but are prewired to

~ When three M1621 modules are used, the DECkit bécomes
an input-only interface. That is, data can only be trans-

~accommodate an additional I/O module (M1621, M1623,

ferred from the user’s deviceto the kit, then to the PDP-11

- M1801, or a Small Peripheral Controller) as determined by

processor. Three M1621 modules can accommodate up to

the user. Paragraph 2.13 discusses DECkit11-M variations.

102 input data bits.

<«— CONNECTOR Jt

©]
.

JUMPERS w11,w1,2-.,—«_n[| |
C

oa—"]

ONE-SHOT

~ CAPACITOR

TERMINALS

c—e—t+— ONE-SHOT
" PULSE ADJ

CW-DECREASE

JUMPERS W13,wi4

°*~

CCw-INCREASE -

M1623 MODULE COMPONENT SIDE

JUMPERS '\gv1v-w'10--—\JUMPkERS W16,W18-W20
JUMPERS w1',5,W17—>|]

EEE

Figure 2-5

M1623 Module Layout

CcP-1306

|9¢
[

5
i

;

40-PIN OUTPUT CONNECTOR

An additional M7821 interrupt control module (with the

ON USER'S DEVICE

proper address) must be installed into slot BO2 to service

MATES

WITH H856 FEMALE

INPUT- CABLE

the interrupt requests for I/O modules placed in slots

rdk:

ol
»

| @

CO4—F04.

{

1o | &

K
- | m
~
|
©

| ®

| =

- Controllers are used they must occupy slots C03 —FO03 and

5
o

C02—F02. When two I/O modules or two Small Peripheral

- CO02—F02. The interrupt vector address produced by the

‘

B02 module ends in zero (i.e., vector address 170g). Slot

(O]

“BO3 contains an M7821 module which services interrupt

40-PIN INPUT CONNECTOR

requests
for I/O modules
in slots CO3—-F03 and C04—-F04.

"~ MATES WITH H856 FEMALE
' ON USER'S DEVICE

Modules in slots CO3—F03 are serviced by a vector address

OUTPUT CABLE

that ends in zero (i.e., vector address 170g), while the

vector address for modules in slots C04—F04 ends in four

(1e., vector address 1745).
n

Regardless of the I/O module configuratron of the DECKit,

‘the G7361 priority select module (Figure 2-3) must be

CP-1305

installed
in slot CO1. The use of the sockets on the G7361
Frgure 2-6

‘module varirs with the type of modules installed in the

DECKkit11-M Slot Assignments —

'C02—F02, C03—F03, and C04—F04 slots. Socket J1

Module Side

is used

to select interrupt priority lines for an I/O module in slots
C02—F02.

Socket J3 selects interrupt priority lines for

On the other hand, when three M1623 modules are

CO3—F03,

and

installed in slots CO2—F02, C03—-F03, and C04—F04, the

C04—F04. Sockets J1, J3, and J4 must contain priority

DECKkit becomes an output-only interface. That is, data can

jumper plugs for priority levels four, five, six, or seven as

socket

selects

priority

lines

for

only be transferred from the PDP-11 processor to the user’s

determined by the user. Since socket J2 is not servicing an

device. Three M1623 modules can accommodate up to 72

1/0O module, a no request priority jumper plug must be

output data bits.

installed into

J2.

When

Small Peripheral

occupies slots C02—-F02, socket J1

‘The M1801 16-brt relay output 1nterface module may also

Controller

must contain a no

request priority jumper plug and socket J2 must contain a
-

be installed in slots C02—F02, C03—F03, and C04— FO4.

priority jumper plug for priority level four, five, six, or

When the kit is configured with three M1801 modules, up

seven as determined by the user. DECkitl11-M is supplied

to 48 output data bits can be transferred from the PDP-11

‘with two level four and two no request priority jumper

processor to the user’s device. Again, the kit becomes an

plugs. Additional priority jumper plugs may be ordered

output-only interface.

from

the

nearest

Digital

Equrprnent Corporation Sales

Office.

Finally, three Small Peripheral Controllers may be installed

in slots C02—F02, C03—F03, and C04—F04. The type of

Tables 2-2 through 2-4 list the modules required (Yes) and

Small Peripheral

not required (No) for various BB11-M mounting panel

Controller used depends on the user’s

requirements.

interface configurations. The use of DECkit1 1-M variations

Any combination of the aforementioned modules may be

‘tional modules and priority jumper plugs required to

installed into the BB11-M mounting panel. However, when

implement a user’s option must be purchased from Digital

only one I/O module is installed it must occupy slots

Equipment Corporation.

outlined in this manual is strictly a user’s option. Addi-

2-6

(

Table 2-2
|
Input-Only Interface
|

No. of

Input

Bits
34
68
102

M1621

D01

|C02—F02 |C03—-F03 {C04-F04
Yes
No
Yes

No
Yes
Yes -

M105

EO1

FO1

G7361

CO01

No
Yes
Yes

Yes
Yes
Yes

FO1
No
Yes
Yes

G7361
Co1
Yes
Yes
Yes

M105
EOQ1
No

FO1
- No

G7361
Co1
Yes

Yes

No
Yes
Yes

Yes
No
Yes

No
Yes
Yes

Table 2-3

Output-Only Interface

DO1
Yes
No
Yes

:
M105
EO1
‘No
Yes
Yes

Table 2-4

Output-Only Interface (Relay)

No. of

M1801
Output
Bits | C02—F02| C03—F03 | C04—F04
No
| No
Yes
16
48

Yes

D01
Yes

Yes

CHAPTER
3
INSTALLATION

box, power is provrded by the exrstrng+5 Vdc power

31 GENERAL

| supply Any power supply capable of meeting the voltage,

Installation of DECKkitl 1-M consists of securing the pre-

wired

mounting

panel,

with

the

previously

current, regulation, and ripple requirements of a Digital

installed

processor or into an

Equipment Corporation H720 power supply may be used

added expansion mounting box and then connectmg the

to power DECKkit11-M if the krtis not 1nsta11edin a PDP-11

| Umbus power and I/O cables to the kit.

or a mountmg box.

3.2

3.3

modules, into an existing PDP-11

SYSTEM CONSIDERATIONS |

CABLING

“Before installing DECkit11-M, consideration must be given

DECkit11-M requires connections to the PDP-11 Unibus, to

to Unibus loadrng, prlorrty reqmrements space require-

the user’s I/O device, and to the logic +5 Vdc power source.

~ ments, and power requrrements
3.2.1 Unibus Loadmg

normal

configuration.

| 1 ‘Unibus, 1/0, and power cables for use with the DECKkit may
be ordered from Drgrtal Equrpment Corporation.

DECkitl 1-M presents two. bus loads to the Unibus in the

kit’s

Twenty

bus

loads

can

331

The M920 module plugs into slot ABO4 of the existing

Unibus load when installing DECkitl1-M and the possible

system unit and into slot ABO1 of DECkit11-M (Figure

need for bus repeater DB11-A for handling additional bus

2-6). When the DECKitis 1nstalled as the first system unit in

~ loads. The bus repeater is not supplied with the DECKkit but

an expansion box, a BC11A-XX* cable of correct length is

can be ordered from the nearest Drgrtal Equipment Corpor-

3.2.2 Priority ReqUirements

system umts requires an M920 Unibus connector module.

repeater is required. Therefore, the user must determine the

. ation Sales Office.

Unrbus Cables

'Installatron of DFCkrtll M into a cabmet contammg other

- handled - by the . standard PDP-11 Unibus before a bus

required to connect between slot AB04 of the last system

* unit in the cabinet or previous extension box and slot ABO1

of the DECKkit. Nerther the M920 module nor the

BC11A-XX* cable is supphed with DECkitl 1-M. An M930

DECkit11-M makes bus requests on priority level four

‘terminator module must be installed in slot ABO4 of the

(BR4). Since the user may connect the kit to the bus along
with other devices which use the BR4 level, the user must

DECKkit (Frgure 2- 6) when DECKkit11-M

bear in mind that when more than one device is connected

‘the Unibus. The M930 module becomes available when the

is the last device on

to the same request line, the device electrically nearest the

Unibusis extended from the previous system unit.

~ PDP-11 processor has the highest priority.
3.3.2 Power Cables

3.2.3

There are three power cables avaflable for use in connectrng

Space Requirements

DECkit11-M to PDP-11 systems Early PDP-11 processors

DECkitl 1-M consists of one BBI11 system unit mounting

panel. The kit may be mounted eitherin an existing PDP-11

(PDP 11 /15 PDP-11/20) and expansion mountrng boxes

processor, an existing expansion mounting box, in an added

have wire harnesses with G772 connectors for all system
unit

- expansion mounting box, or in any other su1tab1e enclosure

mountrng

(PDP-11/30,

whrch provrdes proper coohng and protectlon

_v'harnesses

3.2.4 Power Requirements

locatrons

PDP- 11/40

Later PDP- 11

and

processors

PDP- 11/45) have

with a Mate- NLok power

“system unit mountmg locations.

wire

connector for all

Wire harnesses

are

DECkit11-M requires +5 Vdc at 3 8 A in the k1t s normal

| furnished only as needed. When mstallmg DECkrtll -M into

~ configuration. When' the DECKit is mounted in an exrstlng

one of the later systems one of the followmg harness

PDP-11

assembliesis requrred

processor or in an existing expansion mountmg

#XX
= cable lengthin feet

3-1

For PDP-11/45 systems having serial numbers

~ Standard

below 2000 and using 8-pin Mate-N-Lok to

Cable No.

G772 connectors:

Connectors

Type

Cable No.

Length

7008855-1J

20 in.

- 7008855-2B

26 in,

Lengths

BCO7D-XX

H856 to

BCOSR-XX

(ft)

Two, 20-

10, 15,

openend

conductor ribbon

H856to

Shielded flat

1,6, 10,

H856

For PDP-11/40 systems having serial numbers

;

12, 20,
25, 50,

below 6000; PDP-11/35 systems (21 in. high

75,100

processor cabinet) having serial numbers below
6000; H960-D and H960-E cabinet configura-

BC0O4Z-XX

tions having serial numbers below 7000; all

PDP-11/E05,

PDP-11/E10

systems;

HS856 to

Shielded flat

6, 10,

‘open end

and

15,25,

PDP-11/35s (10-1/2 in. high processor cabinet);
all using 9-pin Mate-N-Lok to G772 connectors:

Cable No.

Length

7008909-11

11 in.

7008909-17

17 in.

3.4 INSTALLATION

The installation procedufe preSented below details the [

installation of DECKkit11-M in a PDP-11 processor or an \
expansion mounting box. The installation procedure is as

follows:

For PDP-11/45 systems having serial numbers
2000 and above; PDP-11/40 systems with serial

Mount the DECkit (with modules prev1ously

numbers 6000 and above; PDP-11/35 systems

installed) into the vacant system unit location

(21in.

and secure with the two special knurled screws

high

processor

cabinet)

numbers

6000

and. above;

H960-E

cabinet

configurations

with

and

serial

H960 and

supplied with the kit (Figure 3-1).

having serial

numbers 7000 and above; all using 15-pin and

6-pin Mate-N-Lok to G772 connectors:

Plug the Unibus cable or an M920 Unibus(
connector module (whichever applies) into slot

ABO1 (Figure 2-6) of the DECk1t

Cable No.

Length

7009562

18 in.

Alternatively, a G772 connector can be installed on a
suitable

cable

for

meeting

the

current

the

regulation

requirements

DECkit11-M, or +5 Vdc power can be directly connected to
“wire-wrap pins for +5 V and ground on slot AO3 shown on

User I/O Cables

~Two

cable

DECkit11-M

5.
|

assemblies

(normal

are

required

configuration)

for

interfacing

the

user’s

device,

install

M920 connector

Plug the G772 power connector into DECklt Q
| slot AO3

BB11-M-2 in the KIT11-M Engineering Drawings.

3.3.3

last

module or BC11A cable in slot ABO4.

use with any +5 Vdc power supply
and

Plug an M930 terminator in DECkit slot AB04
~ if the kit is the last device on the Unibus; if not

Connect the user’s 1/O device input and output
cables to the 40-pin connectors on the M1621

and M1623 modules (Figure 2-6).

I/O

device. Input signals to the DECkit are applied through a

40-pin male connector mounted on the M1621 module in

Examine the interconnecting cables for pinched
wires or loose connections.

slots C04—F04 (Figure 2-6), while output signals from the
DECkit are brought to a 40-pin male connector on the =

3.5

M1623 module in slots C03—F03 (Figure 2-6). The 40-pin

- After completlng the installation procedure turn on the

connectors on the modules mate with H856 40-pin cable

INITIAL TURN-ON

PDP-11 system power and check for the presence of +5 Vdc

terminators. It is recommended that cable assemblies from

and -15 Vdc at the DECKit mounting panel. (Refer to

the following
list be used to interface the DECkit with the

KIT11-M Engineering Drawings and Figure 3-2.) Verify that

user’s I/O device. Cable selection is determined by the type

‘the proper M105 module addresses have been

of connections used on the I/O device. The desired cable

(Paragraph

length (XX) must be specified when ordering.

registers and mdmators

3-2

2.5)

wusing

the PDP-11

selected

console swflch

COLUMN A,ROW {
ROW
01

03 04

A LN

c
BB11 SYSTEM UNIT

MOUNTING PANEL

yM
N

N
AN

® A0
eBe

®Ceo

<:| FRONT

REAR |::>

®De
@

E®

eF
o

e He
J e
@

MODULE

AO1Ki

fole

LAYOUT

PER BILLOCK

oM@

BA{1 MOUNTING BOX

@NG®

CS-0664

O
®R

Figure 3-1

Installation of DECkitl 1-M System

e Se

Unit Mounting Panel

@eT
e

euUe
e
eV
CsS-1307

Figure 3-2 MountingPanel Pin Designation

3-3

4
CHAPTER

'BASIC OPERATION
41

DEClqt and transfernng 24 control bits from the Unibus to

GENERAL

This section contains a general functlonal desenptlon of

the user’s device through the DECKit. Brief descriptions of

DECkit1 1-M operations pertaining to ‘the normally con-

the DECkit timing assoc1ated W1th the

figured kit. Figure 4-1 is a block dlag_ram of DECkitl1-M.

‘transfers are also presented

mput/output

Operation of DECkit11-M consists of transferring 34 data
- bits from the user’s device to’v;_ thevU\nibus _thxough‘_the

| 42 FUNCTIONAL DESCRIPTION (Figure 4-1)

DATA D (15:00)

ADDRESS A 7 00)>
CONTROL

SELECT SIGNALS >
|

M105 ADDRESS

121

VECTOR

sApORESS D (08: 02)

INTR ENB A

~ CONTROL

INTRENBB

INTERRUPT

—

BO3

STROBE

USER'S

INTR B

105 AobRESS

CONTROL

STATUS

[®

DEVICE.

'SELECT SIGNALS

co4-Fo4

|e—DEADY

INTRA

mM7821

ADDRESS A (17:00)

OuT Low |

INTERFACE.

;

M1621

N | DATA (NPUT

|SELECTOR FO1

CONTROL=

34 DATA LINES

SELECTOR EOf

J‘>

50T

—

IN1

24 CONTROL

M1623

LINES

INSTRUMENT |

STROBE

conTrROL | READY

Low TM|

!NTERFACE

cos-Fo3

‘

OUT HIGH

DATA D (15:00)

i i

<DATA D (15:00)

3 STATUS

AP0

CP-1311

N
Figure 4-1

DECKkit11-M Block Diagram

4-1

4.2.2 Unibus to User’s Device Data Transfers

42.1 User’s Device to Unibus Data Transfer
Data transfers from the user’s device to the Unibus can be
program-controlled or interrupt-controlled. Three Data In
(DATI) bus transactions are required to transfer the 34 bits

Data transfers from the Unibus to the user’s device can be
program-controlled

of data from the user’s device to the Unibus. Bits DOO

through D11 (12 bits) are transferred during the first DATL

Transfers are initiated when the user’s software program
instructs the PDP-11 processor to move the data from the

Transfers are started when the user’s device places 34 bits
of data on the DATA LINES to the M1621 module (slot
C04—F04) and the user’s software program instructs the
PDP-11 processor to “read” the data. The processor
performs the first of three program-controlled DATI
transfers by placing Unibus CONTROL and the appropriate
M1621 module ADDRESS [A (17:00)] on the Unibus.

ADDRESS and CONTROL. The address is decoded into
one of three SELECT SIGNALS, which is applied to the

processor to the M1623 module.
The PDP-11 processor

supplies the proper M1623 module ADDRESS [A (17:00)]
and

initiates

the

address selector

the M1623 module. M105 decodes the ADDRESS and

LOW signal. The OUT LOW and SELECT SIGNAL are then
~applied to the M1623 module to transfer 8 bits of the 24

bits of data to the user’s device via the CONTROL LINES
and

STROBE

signal.

The

processor

now

places new

ADDRESS and CONTROL signals on the lines to the M105
module, and the second byte of data [DATA
D (07:00)]
~on the lines to the M1623 module. SELECT SIGNAL (SEL

2 in this case) and OUT'LOW.are decoded
by the M105

module and applied to M1623 to transfer the second byte
~ to the user’s device. Finally, a new ADDRESS and the third

new

byte of data [DATA D (15:08)] are applied to the M105

M105 module in slot FO1

and M1623 modules. SELECT SIGNAL (SEL 2 in this case)
and OUT HIGH are now decoded by the M105 moedule and
applied to the M1623 module. The third 8-bit byte of the
24 bits of output data are now applied to the user’s device.

third DATI.

_ADDRESS is presented to the

signals to the MI105

produces a SELECT SIGNAL (assume SEL 4) and the OUT

module, the SELECT SIGNAL (SEL 6 in this case) and the
IN signal gate 12 bits of data [DATA D (12:00)] through
M1621 to the Unibus. The next read instruction starts the

instruction

CONTROL

module (slot EO01) and places DATA D (07:00) (this
example assumes three DATOB transfers) on the lines to

M1621 module along with the IN signal. At the M1621

second DATI. A new ADDRESS is presented to the M105
in a second SELECT SIGNAL
module (slot FO1), resulting
(SEL 4) and the IN signal. Thus, 16 bits of data (DATAD
(15:00)] are now gated to the Unibus. Finally, a third read

Twenty-four

take the form of byte (DATOB) or word (DATO) transfers.

The second DATI transfers bits DOO through D15 (16 bits),
and the third DATI transfers bits DOO through D05 (6 bits).

Address selector module M105 (slot FO1) receives the

or interrupt-controlled.

data bits may be transferred through the M1623 module
(slot CO3—F03) to the user’s device. Since the M1623
module contains three eight-bit registers, data transfers may

Again,

along with the CONTROL signals. M105 decodes the new

address and generates another SELECT SIGNAL (SEL 6)

and the IN signal for the M1621 module. The final 6 bits
[DATA D (00:05)] of the 34 bits of data are now gated
through the M1621 module to the Unibus.

During interrupt-controlled DATI transfers, the user’s
device sends the READY signal to the M1621 module when
data is ready for transfer, and places 34 bits of data on the
DATA LINES. The M1621 module now produces INTR A
and INTR ENB A and applies these signals to the M7821

The preceding paragraph dealt with three DATOBs to
- transfer 24 bits of data to the user’s device. One DATO and
“one DATOB can also be utilized to transfer the 24 bits. For
- DATO
transfers, the PDP-11 processor places the
ADDRESS and CONTROL signals on the lines to the M105

module, and places 16 bits of data [DATA D (15:00)] on

the lines to the M1623 module. Module M105 decodes the

proper SELECT SIGNAL (SEL 2), OUT LOW, and OUT

interrupt control module (slot B03). M7821 places bus

HIGH. These signals are then applied to the M1623 to load
the 16 bits of data into two of the three 8-bit registers

CONTROL signals on the Unibus to request bus control.

Bus control is granted to the M7821 module (after

located in the M1623 module. Thus, 16 bits are transferred

performing the standard Unibus handshake routine), and as
bus master, M7821 places an interrupt VECTOR
- ADDRESS [D (08:02)] on the Unibus. The PDP-11
processor then goes to the interrupt service routine at the

on the CONTROL LINES to the user’s device. The final 8
bits of data are transferred during a DATOB. Again, the
M105 module receives the proper ADDRESS and
'CONTROL signals, while M1623 receives 8 bits of data

specified vector address. Instructions in the service routine
clear the interrupt and transfer the 34 bits from the DATA
LINES by utilizing three DATI cycles as described in the

" to M1623 to load the final 8 bits of the i4 bits of data into

(DATA D (07:00)]. M105 now decodes another SELECT
SIGNAL (SEL 4) and OUT LOW. These signals are applied

the third 8-bit register for transfer to the user’s device.

preceding paragraph on program-controlled transfers.

4.2

(

‘interrupt VECTOR ADDRESS [D (08:02)] on the Unibus.
The PDP-11 processor then goes to the interrupt service
routine at the specified vector address. Instructions in the

Data from the M1623 module transferred to the user’s
device can be ‘“‘read back” to the PDP-11 processor. The 24

bits of data are read in two segments. First, a DATI reads

16 bits, then a second DATI reads the remaining 8 bits. To
accomplish this data read back, the PDP-11 processor
supplies the proper ADDRESS and CONTROL to the M105
module. For DATI, M105 decodes SELECT SIGNAL (SEL
2) and IN. These signals are applied to the M1623 modules
to enable bus drivers, which return the outputs of two 8-bit

service routine transfer 24 bits of data from the processor

during the second DATI. Again, M105 receives the proper

~ ADDRESS and CONTROL signals. SELECT SIGNAL (SEL

Three of these gates handle STATUS bits from the user’s
device, while the remaining two gates handle INT and INT

The 8-bit output of the third M1623 storage register is now

module to the Unibus by SELECT SIGNAL (SEL 0) and IN

to the user’s device via the DECKkit utilizing DATOB and/or

DATO cycles as described in the preceding paragraphs on
program-controlled transfers. -

As a final note, the M1623 module contains five gates

which function as a Control and Status Register (CSR).

registers to the Unibus. The last 8 bits of data are read back

ENB status bits. These CSR bits are gated from the M1623

4) and IN are decoded by M105 and are applied to M1623.

from the M105 module. Figure 4-2 shows the M1623 CSR

_read back to the Unibus.

bit assignments.

It was previously mentioned that data transfers to the user’s
“device can be interrupt-controlled. Interrupts are controlled
by the READY signal from the user’s device. At M1623,
READY causes an interrupt request (INTR B) to be applied
to the M7821 module (slot BO3) along with INTR ENB B.
(INTR ENB B must be set by the user’s software.) The
M7821 module places bus CONTROL signals on the Unibus
to request bus control. Bus control is then granted to the
M7821 module (after performing the standard Unibus

4.3 INPUT/OUTPUT TIMING
Input data transfer timing for the M1621 module and
output data transfer timing for the M1623 -module are

program-controlled. The only user timing adjustments are
for the M1621 and M1623 one-shot pulse generators that
produce the DATA STROBE pulses. Information pertaining

to the M1621 and M1623 one-shot pulse adjustments is

handshake routine), and as bus master, M7821 places an

presented in Paragraphs 2.9 and 2.11.

07T

[§

USER'S DEVICE

NOT USED

[

)

-t

NOT USED

INT
INT ENB

CP-1304

Figure 4-2 Module M1623 CSR Bit Assignments

APPENDIX A
DECkit 11-M PARTS LIST

Table A-1 lists the parts supplied with DECkit11-M by part number, description, and quantity used.
Table A-1

/'.//-‘\\\‘

DECKkit11-M Parts List

Part No.

Description

Quantity

M105

Address Selector

M1621

DVM Data Input Interface

‘M1623

Instrument Remote Control Interface

M7821

Interrupt Control

G7361

Priority Select

5408776

Level 4 Priority Jumper Plug

5410341

No Request Priority Jumper Plug

BB11-M

Mounting Panel

H852

Module Holder (rib type)

H853

Module Holder (non-rib type)

A-1

APPENDIX B
MODULE M1623 OUTPUT

CONNE CTOR PIN ASSIGNMENTS
Table B-1 lists the 51gnals on the M1623 output connector by pin de31gnat10n signal name, signal description, and |
drive capability.

Table B-1

M1623 Output Connector Pin Assignments

Description

Drive Cvapability

(TTL Unit Loads)

Signal

GROUND

DC Ground

+5 Vdc

Available to User

—

Not Used

—

D07 OUT

D01 OUT

D04 OUT

1 = High

D00 OUT

D04 OUT

D00 OUT

Not Used

D02 OUT

1 = High

~ 1=High

B-1

Table B-1 (Cont)
M1623 Output Connector Pin Assignments

Pm |

Drive Capability

Signal

Description

~ (TTL Unit Loads)

Not Used

—

D02 OUT

1=High

Not Used

—

—_

| Not Used

—

Not Used

—

D13 OUT

Not Used

—

D12 OUT

Not Used

D15 OUT

1 = High

Not Used

—

—~

Not Used

—

‘Not Used

—

D11 OUT

1 = High

D14 IN*

Status Bit 14

1 = High

D10 OUT

1 = High

D13 IN*

Status Bit 13

1 = High

DATA STROBE OUT

User-Selected Polarity

D11 IN*

Status Bit 11
1 = High

*This signal is an input signal on the output connector. It presénts a load and has no drive c'apabi]ity. |

B-2

20
1

Table B-1 (Cont)

M1623 Output Connector Pin Assignments
Drive Capability

Signal

D06 OUT

Description

(TTL Unit Loads)

~1=High

READY IN*

User-Selected Polarity

D06 OUT

1 = High

D05 OUT

1 = High

D08 OUT

|
SS

1 =High
D05 OUT

1 = High

D09 OUT

1 = High

VvV

D03 OUT

D03 OUT
|

1 =High

1 = High

*This signal is an input signal on the output connector. It presents a load and has no drive capability.

B-3

APPENDIX C

MODULE M1621 ENPUT CONNECTOR

PIN ASSIGNMENTS
Table C-1 lists the signals on the M1621 mput connector by pin designation, signal name, s1gnal description, and unit
loads.
Table C-1

M1621 Input Connector Pin Assignments
,

Signal

Description

(TTL Unit Loads)

GROUND

DC Ground

—

+5 Vdc

~Available to User

—

Not Used

—

D08 IN

Input Bit 08

DATA STROBE OUT*

User-Selected Polarity

D08

Input Bit 08

20
1

1 = High

READY IN

- DI3

USer—Selected Polarity

Input Bit 13

1 = High

STATUS IN

User’s Device Status Bit 14, |

D14

Input Bit 14

M
|

D03.IN

Input Bit 03

1 = High

D15 IN
a

1 = High

1= ngh

Input Bit 15

1 = High

D02 IN

Input Bit 02

1 = High

D12 IN

Input Bit 12

1 = High

" *This signal is an output signal on the input connector. It has drive capability and does not present a load.
C-1

Table C-1 (Cont)
M1621 Input Connector Pin Assignments

Signal

Description

D03 IN

Input Bit 02

(TTL Unit Loads)
1

1 = High

D11 IN

Input Bit 11

|
U

D03 IN

Di1 IN

1 = High
Input Bit 03

1 = High

Input Bit 11

1=High

D02 IN

Input Bit 02

1= Hign
X

DO7 IN

Input Bit 07

1 = High
Y

D03 IN

Input Bit 03

1 = High

D07 IN

Input Bit 07

1 = High

D00 IN

Input Bit 00

|
BB

cCc

1 = High

D09 IN|

Input Bit 09

D01 IN

Input Bit 01

1 =High

1 = High

D09 IN

Input Bit 09

1 = High
EE

DO1 IN

Input Bit 01

1 = High
FEF

D10IN

Input Bit 10

1 = High

D05 IN

Input Bit 05

1 = High
1]

D10 IN

Input Bit 10

1 = High

- C-2

Table C-1 (Cont)

M1621 Input Connector Pin Assignments

Description

Signal

Input Bit 05

Ldading

(TTL Unit Loads)
1

D05 IN

D06 IN

Input Bit 06

DO1 IN

Input Bit 01

D06 IN

Input Bit 06

DOO IN

Input Bit 00

D04 IN

Input Bit 04

D00 IN

Input Bit 00

D04 IN

Input Bit 04

18]6]

D04 IN

Input Bit 04

\'AY

DOS IN

1 = High

1=High

1 = High

Input Bit 05
1=

C-3

High

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