Digital Equipment PDP-8/A Service-Handbuch

EK-SA001-0P-002

PDP-Sf

A OPERATOR'S

HANDBOOK

digital

equipment

corporation •maynard.massachusetts

PDP;;;8/A

OPERATOR'S

HANDBOOK

digital

equipment

corporation

•maynard.massachusetts

18t

Edition, September 1975

2nd Printing (Rev), September 1976

Digital Equipment Corporation

The material in this manual

for informational

purposes and

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.

This document

was

set

DIGITAL's DECset-8000

computerized typesetting system.

The following are trademarks

Digital Equipment

Corporation, Maynard, Massachusetts:

DEC

FLIP CIllP

DIGITAL

UNIBUS

DEC

PDP

FOCAL

COMPUTER LAB

MASSBUS

CHAPTER 1

CHAPTER 2

2.1

2.2

2.2.1

2.2.2

CHAPTER 3

3.1

3.2

3.3

3.4

3.4.1

3.4.2

3.4.3

3.4.5

3.4.6

3.4.7

3.4.8

3.4.9

3.4.10

3.4.11

CHAPTER 4

4.1

4.2

CHAPTERS

5.1

5.2

5.3

5.4

CHAPTER 6

6.1

6.2

6.3

6.4

CHAPTER 7

7.1

CONTENTS

INTRODUCfION

PACKING AND UNPACKING INSTRUCTIONS

UNPACKING INSTRUCTIONS

PACKING INSTRUCTIONS

BA8-C Chassis Assembly

.....

Other

PDP-8/A Chassis Assemblies

SYSTEM DESCRIPTION

Page

2-1

2-3

GENERAL

.......

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

3-1

CHASSIS DESCRIPTIONS . . . . . . . . . . . . . . . . . . . .

3-4

EXPANSION TECHNIQUES . . . . . . . . . . . . . . . . . . . .

3-8

PDP-8/A MODULE DESCRIPTIONS

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

3-9

KK8-A Central Processor Unit (CPU)

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

3-9

MS8-A Read/Write Random Access Memory

(RAM)

..........

3-11

MR8-A Read-Only Random Access Memory (ROM)

..........

3-12

NHvI8-AA

8K Core Memory . . . . . . . . . . . . . . 3-15

MM8-AB 16K Core Memory . . . . . . . .

......

3-16

DKC8-AA I/O Option Board

.......

....

3-18

K~M8=A

Extended Option Board

....

...

. . . . .

....

3-22

Semiconductor Memory Power Supply . . . . . . . . . . 3-25

Core Memory Power Supply Regulator

...........

3-26

Limited Function Panel

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

....

3-29

KC8-AA Programmer's Console

........

. . . . . . . . . . . 3-30

INSTALLATION AND INITIAL POWER TURN-ON

ENVIRONMENTAL AND POWER REQUIREMENTS

INITIAL POWER TURN-ON

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

TESTING PDP-8/A WITHOUT PAPER TAPE DIAGNOSTICS

4-1

PROGRAMMER'S CONSOLE

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

5-1

CENTRAL PROCESSOR TEST ROUTINES

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

5-1

ENTERING TEST ROUTINES FROM PROGRAMMER'S CONSOLE

....

5-1

CENTRAL PROCESSOR TEST ROUTINES . . . . . . . . . . . .

5-2

LOADING THE RIM AND BINARY LOADERS

LOADING RIM LOADER

..........

CHECKING THE RIM LOADER

.......

LOADING THE BINARY LOADER

.....

LOADING BINARY

FORMATIEDPAPER

TAPES

. . . . . .

6-1

6-2

6-3

TESTING THE PDP-8/A USING MAINDEC DIAGNOSTIC PROGRAMS

CENTRAL PROCESSOR UNIT (CPU) TEST

7-1

iii

CHAPTER 8

S.l

S.2

S.3

S.4

CONTENTS (Cont)

ADDITIONAL DIAGNOSTIC TESTS

MEMORY TEST

.........

DKCS-AA TEST . . . . . . . . . . .

KMS-A

EXTENDED OPTION BOARD TEST

TESTING EXTENDED MEMORIES

CHAPTER 9 BASIC PDP-8/A MAINTENANCE

APPENDIX A INSTRUCTION SUMMARY

APPENDIX B DOCUMENTATION

APPENDIX C WARRANTY AND MAINTENANCE SERVICES

APPENDIX D

OMNmus

APPENDIX E POWER CONNECTION

Figure No.

2-1

2-2

2-3

3-1

3-2

3-3

3-4

3-5

3-6

3-7

3-S

3-9

3-10

3-11

3-12

3-13

3-14

3-15

3-16

3-17

3-1S

ILLUSTRATIONS

Title

SA420, SA620, SAS20 Packaging .

PDP-S/A Computer Packaging (Inner)

PDP-S/A Computer Packaging (Outer)

PDP-8/A Computer

........

Part

MS320 Module Showing R55, Which is Removed for SA Operation

PDP-8/A Semiconductor Chassis

..........

PDP-8/A Semiconductor Computer Chassis Dimensions

SA Chassis -H9300 (Transformer Cover Removed)

SA620 Chassis . . . . . . . . . . . . . .

SA420/SA620/SAS20 Chassis Dimensions

SA600/SA620 Expansion

.......

KKS-A (MS315) CPU Module

.....

MSS-A (MS311) Read/Write Random Access Memory

MRS-A (MS312) Read Only Memory (ROM)

MMS-AA SK Core Memory

.....

MMS-AB

16K Core Memory . . . .

. . . .

DKC8-AA (MS316) I/O Option Board

Etch

Revision

DKCS-AA

(MS3l6)

I/O Option Board

KMS-A (MS317) Extended Option Board

.....

Semiconductor Memory Regulator Board (GS016)

SA Master/Slave Switch

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

Page

S-l

S-2

S-6

S-9

Page

2-2

2-4

2-5

3-1

3-3

3-4

3-5

3-6

3-7

3-S

3-9

· 3-10

· 3-11

· 3-13

· 3-15

3-17

3-18

· 3-19

3-20

3-25

· 3-27

Figure No.

3-19

3-20

3-21

6-1

6-2

E-l

Table No.

3-1

3-2

3-3

3-4

3-5

3-6

3-7

3-8

3-9

3-10

3-11

3-12

3-13

3-14

8-1

8-2

9-1

ILLUSTRA

nONS

(Cont)

Title

Core Memory Regulator Board (G8018)

Limited Function Panel

.....

KC8-AA Programmer's Console

Paper Tape Leader

.......

LT33 Teletype Controls

.....

PDP-8/A Electrical Connection

TABLES

Title

PDP-8/A Computer Assemblies . . . . . . . . . .

PDP-8/A Computers, Dedicated Omnibus Slots

....

KK8-A (M8315) Central Processor Unit Switch Settings

MS8-A Read/Write Memory Switch Settings

MR8-A Read Only Memory Switch

SettLl1gs

. . .

MM8-AA 8K Core Memory Jumper Installation

. . . . .

MM8-AB

16K Core Memory Jumper Installation

DKC8-AA

I/O

Option Board Switch Settings, C-Etch Module

DKC8-AA Option Board Switch Settings, D-Etch Module . .

Auto-Restart Select Switch Settings

. . . . . . . . . . .

Bootstrap Select Switch Settings for ROMs Labeled 87A2 and 88A2

Page

· 3-28

· 3-29

· 3-30

6-2

6-3

E-l

Page

3-2

3-3

· 3-10

3-12

3-14

.....

3-16

· 3-20

.....

3-21

3-23

· 3-23

3-24

Bootstrap Select Switch Settings for ROMs Labeled 158A2 and 159A2

Bootstrap Select Switch Settings for ROMs Labeled 156A2 and 157A2

Bootstrap/Auto-Restart Switch Settings . . . . . . . . . . . .

.....

Bootstrap Switch Settings for ROMs Labeled

A2 and 88A2 (E82 and E87)

Bootstrap Switch Settings for ROMs (E82 and E87) Labeled 158A2 and 159A2

3-24

8-8

9-1

Basic PDP-8/A Troubleshooting

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

CHAPTER 1

INTRODUCTION

There are two basic types

computers in the PDP-8/A family. The first type

the

PDP-8/

A, which uses

semiconductor memories (MS8 and MR8). The second type

represented by a series

computers, each

which uses 8K or

16K

core memory (MM8); this series consists

the 8A400, 8A420, 8A600, 8A620, 8A800, and

8A820 computers. When a reference applies to both types

computers, the designation

"PDP-8/

used.

"PDP-8/A

semiconductor" refers to the semiconductor memory computer, while "8A400," for example, refers

to a specific core memory machine and

"8A"

refers to the core memory machines in general.

The

PDP-8fA

Operator's Handbook includes instructions for packing, unpacking, and installing a PDP-8/A

miniprocessor. All computers and modules are tested thoroughly at DIGITAL's manufacturing facilities before

they are shipped. However, many switches andjumper wires can be arranged

the customer for specific pur-

poses; furthermore, there

a need both to verify system interconnections and site preparations, and to detect

possible hidden damage incurred during shipping. Consequently, a number

initial operating tests are also

included in this handbook.

P-8

/A basic system can comprise a variety

components. The following three basic systems are the most

common:

A basic PDP-8/A,*a memory, and a Limited Function Panel. (This computer does not include a KM8

Extended Memory Option module and, hence, must be a PDP-8/A semiconductor.)

A basic PDP-8/A, a memory, a Limited Function Panel, a KM8 Extended Memory Option module,

a DKC8-AA

I/O

Option module, and a Programmer's Console. (Chapter 5 describes operating tests

for this arrangement.)

A basic system as described in

but accompanied by a teletypewriter and diagnostic** programs.

(Chapter 7 describes operating tests for this arrangement.)

basic PDP-8fA

defmed as a Central Processor Unit (CPU) and a chassis assembly (chassis, Omnibus, and power supply).

**Diagnostics are test programs written

fmd faults

the logic. The PDP-8fA programs are supplied

paper tape. Diagnostic pro-

grams are optional and may be ordered from

the

Software Distnoution Center, 146 Main St., Maynard,

MA,

01754.

1-1

2.1

UNPACKING

INSTRUCfIONS

CHAPTER 2

PACKING AND UNPACKING INSTRUCTIONS

All PDP-8

computers are packaged in two containers; the inner container holds the computer and some kind

protective material.

The

steps

this section

are

sufficiently general

apply to any PDP-8fA.

unpack the PDP-8fA computer, proceed as follows.

Open the outer carton and remove the inner carton.

Open the inner carton.

Carefully remove the cardboard from the top and sides

the computer.

Carefully remove the computer from the box.

Inspect the computer for damage.

the computer

damaged, notify the carrier immediately.

Unpack any other boxes included in the shipment.

Check that all equipment, software, manuals, etc., are present as specified on the shipping list inside

the carton.

Save the cartons

and

packing material

use if the PDP-8fA is later repacked.

Refer

Chapter 4 for PDP-8fA installation procedures.

2.2 PACKING INSTRUCTIONS

Two types

packages are used for the PDP-8fA computers. The type used and the applicable packing instruc-

tions depend on the type

PDP-8fA chassis assembly.

2.2.1 BA8-C Chassis Assembly

The 8A420, 8A620, and 8A820 computers use a BA8-C chassis assembly (20-slot Omnibus). Figure

2-1

illustrates

the packing procedure. The computer

first placed in the inner container (9905417), the empty space

filled

with plastic protective material

(AIR

CAP, SD-120), and the container

sealed.

The

sealed inner container

surrounded with protective foam material which

then enclosed by the two telescope caps. Finally, the package

secured by two plastic straps.

2-1

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