Digital PDFs

MAINDEC-08-D11

December 1967

18 pages

Original

0.5MB

Document:	maindec-08-d11a-d
Order Number:	MAINDEC-08-D11
Revision:
Pages:	18
Original Filename:	https://svn.so-much-stuff.com/svn/trunk/pdp8/src/dec/maindec-08-d11/maindec-08-d11a-d.pdf

OCR Text

MAINDEC-OS-DI IA-D

IDENTIFICATION
Product Code:

MAINDEC-OB-DI IA-D

Product Name:

Memory Address Test

Date Created:

June 8, I967

Maintainer:

Diagnostic Group

Author:

Green

POP—8
LIBRARY

MAINDEC-08-DI lA—D

ABSTRACT
The Memory Address Test checks For proper memory address selection on the PDP-8.

REQUIREMENTS

2.l

Equipment
Standard PDP-8 Computer.

2 2
.

Storage
The low version occupies locations 0000-0l75.

The high version occupies locations 7400-7575.

The binary loader must be stored in the last memory page.

2 .3

Preliminary Programs
It is assumed that the only malfunction is in the memory addressing circuits.

LOADING PROCEDURE
The program is supplied in RIM format.

STARTING PROCEDURE

4.l

Control Switch Settings
Halt after error printout.

SRO

4.2

4 .3

Starting Addresses
0000

Low Storage

7400

High Storage

Operator Action
a.

Load the starting address into the program counter.

Set the SWITCH REGISTER to 4000, it halt on error is desired.

Push START.

OPERATING PROCEDURE
Same as section 4.

MAINDEC-OB—Dl lA-D

ERRORS

6 .l

Error Printouts

Axxxx

nyyy

(Error printout format)

Axxxx.

(Address).

xxxx

nyyy

(Contents).

yyyy

Address containing the wrong data

Contents of location xxxx.

The address should always equal the contents.

6 2
.

Error Recovery

Analysis of several error printouts should establish a meaningful pattern that will single out
a

particular address selector card.
If it is necessary to scope the problem, the following two instruction loop may be entered

into memory by the operator.

TAD [Bad Location]
JMP .-l

MISCELLANEOUS

7.l

Execution Time
An ll is printed after every 96 complete program loops (every 28 seconds).

7.2

Memory Maps
Low

High
0000

0200
Area

Test Program

Area
Tested

Tested

l
7400
Test Program
Loaders

7600
7777

Loaders

MAINDEC-OB—Dl lA-D

PROGRAM DESCRIPTION

The program consists of four phases which occur in the following sequence.

Phase 1

Load memory sequentially in the forward direction,
address to be tested.

Phase 2

Read and check memory in the same manner as it was loaded in phase 1

Phase 3

Load memory sequentially in the reverse direction,
address to be tested.

Phase 4

Read and check memory in the same manner as it was loaded in phase 3.

starting with the lowest

starting with the highest

In the load phases the contents of every location to be tested is set equal to its address.

the contents of an address are wrong, the contents specify the address which was in the MA register
when the Failure occurred.
error

The address whose contents are wrong is the address that was selected in

Sample error printout:
A2560 C2760

Explanation
2560

While attempting to write a 2760 into location 2760, the data was written into location

MAIN DEC-OB-DT lA-D
9/60/67

MEMORY

/PDP-d

0000

0000
0002

0003
0004

1075
6076

TORWAHD

MLMURY

LOAUUPO

TAU

AURtS

1076
5106

TAD

M/410

DCA

CTR

1073
6473

TAD

ADRLS
ADHtS

2073
2103

152

ADRtS

152

CTR

0010
0011

9004

JMP

1075

TAD

LDADUP*4
LIMLU

0012
0013
0014

5075

DUA

1076
6105

TAD

ADRtS
M/410

DUA

CTR

0015

1473

TAD

0016
0017
0020
0021
0022
0023
0024

7041

CIA

1075

TAD

7440

StA

4116
2073
2105
5015

JMS

0006

0007

0025

0026
0027
0030
0031

0052

1074
3073

MEMLUP;

152
152

JMP

ADRtS

PAGL

/SLT

lutPDSIT

/UET

CTR

TEST

ADDRESS

CONTLNTS

AREA

STARTING

ADDRESS

CONTENTS

FORWARD

DIRhCTION

ADDRtSS
LDUAL
/CONTENTS NOT

lutT

/SKIP

SAMh AS
/StLtCT NtXT ADDRESS
IF tND TEST AREA

ERROR
AURtS

ADDRESS

MtMLUP

/LOAD MLMDRY REVtRSt
LDAUHN: TAD LIMHI
DCA

AURLS

TAD

M7410

DUA

CTR

TAD

ADRtS

1076
3103
1073
3473

DCA

CMA
AURtS

AURES

7240

CLA

1073
3073
2103

DCA
ISZ

ADRLS

0057

5031

JMP

LOAUWN+4

0040

1076
3103

TAD
DCA

M7410
CTR

TAD

DIRECTION

ADRtS

0053
0034
0035
0066

0041

(LDN:

LIMLO

DUA

UUA

0005

TtST

/LDAD

0001

ADURLSS

PAGt

1:4D,é

CTR

DIREQTION
/StT

/UEPO$IT
7Ac=a1

TEST

ADDRESS

AREA

ENDING

CONTENTS

/AC={ADRES)'1
7SK1P

IUECREMENT ADDRESS
wHEN LOWER LIMIT REACHED

ADDRESS

9/69/67

9942

9943

1974
6973

kOOPZa

/SEDUtNTIAL
TAD LIMHI
DCA AURtS

9944
9945

1473

TAD

7941

CIA

9946

1973

TAD

9947

7449

StA

9959

4116
7249

JMS
CLA
TAD

9951

9952

9953

9954
9955
99b6
9957
9969

9961
9962
9963

1973
3973
2193

DCA

5944

JMP

2977

ISZ
JMP

ISZ

5999
1199
6977
1111
4144

TAD
DOA

TAD

JMS

TAD

K261

JMS

9972

5999

JMP

LUAUUP

9973

9999

9974
9975
9976

7619
9299
9379

9977

7649

9199

7649

9191

9261

9192
9193

7774

/CONSTANTS

9194

9999
9997

ADRLSa
LIMHI;

LlMLOn

299

M7419:

-7419

COUNT:
RESTOHI

0149

K261:
M4.
CTR;

291

7619

MSK7,

TWO:

STDH.

209
9

NUMQ

RAL

CONT:
CR;
LFn
SPACE:

9113

7994
9999
9215
9212
9249

9114
9115

9391
9393

391
393

9195
9196
9197

9119
9111

9112

9269
9999

215
212
249

ADDRESS

EQUAL
/CONTENTS

NOT

SAME

/AC=al

AURLS
AURES
CTR
LO0P2*2
COUNT
LUAUUP
RhSTOR
COUNT
CR
PRINT

9971

$149

/GET

CMA

JMS

9979

TAD

STARTING

CONTENTS

ERROR

1191
4144

9966
9967

(DOWN)

/SET
leT

/SKIP

LP
PRINT
K261
PRINT

JMS

TEST

AURES

TAD

9965

LOCATION

AURES

1112
4144
1191
4144

9964

PAGE

1249.4

/AC=(ADRES)'1
/SELECT NEXT ADDRESS
/SKIP

ANU

VARIABLES

END

TEST

AREA

ADDRESS

9/éW/67

W116

WWWW

W117

7W41
1W75

CIA

W12W

TAD

AURLS

W121

611%

DCA

CUNT

W122
W123
W124
W125
W126
W127

1111
4144

W13W

W161
W162

MtSU.

4144

JMS

1114

TAD

4144

JMS

1W73
4152

TAD

AURLS

TYPAC

TAD

SPACE
PRINT

JMS
TAD

W165

4144

JMS

W156

111W
4152
76W4

JMS
LAS

TAD

W143

771W
7402
5516

W144

WWWW

W145

6W46
6W41
5146

TLS
TSF

72WW
5544

CLA

W142

W146

W147

WlbW

W151

JMS

1115

W141

JMS
TAD

W163

SPA

PRINT
CONT
TYPAC
CLA

HLT

JMP
PRINT:

/HALT
I

ERROR

JMP
JMP

CONTENTS
/0F FAILING
/PUT RESULT

MhSSAGt

1112

W154

W14W

/RESTURE

ltRROR
TAD CR

111$
4144

W157

RDUTINt

/tRROR

ERROR;

PAGt

1349.4

.‘1
I

ERROR

(SRO)

ADDRESS

CONT

9/6U/b7

OUTAL

MMMM

31M6

9194

1162

M155

DCA

BACK*2

TAD

M157

3163
1102
31Ms

DCA

CTR

M1MM

71MM

CLL

M161

11M6

D162

7MM6

TAD
RTL

W163

7MM6

RTL

M164

51M6

DCA

$165

1136

TAD

W166

M1M4

AND

W167

11MB
4144

TAD

TW6

JMS

M171
M172

,1107

TAD

3163

DUA

PRINT
NUM
BACK+2

M173

21U3
5161
5552

IS£
JMP
JMP

CTR
BACK
I TYPAC

M174
M175

TYPACa

M153

M17M

ARE

(Ac)

M1b2

wlbé

THERE

/TYPE

tRRORS

DUA
TAD

BACK;

STOR
BACK+1

STOH

STOR
STOH
MSK/

1343.5

PAGE

9/ém/b7
SYMBOL

TABLt

U114

AURLS

0w76

BACK

@161

0115

CUNT

011m

CUUNT

0&7?

@111

CTR
EHRUR

0196
0116

K261

w1m1

LP
LIMHI
hLMLO
LUAUUP
LUAUWN
LUOPZ

@112

MLMLUP
MtSG

@fllb
U122
@1U4
ulna
@m76
01%?
0144
Elww

MSK7
M4

M/410
NUM

RtSTOR
SPACE

STOR
wa

TYPAC

0074

0w75
DEE”
UM25

mw42

M113

mlmo
@105
$152

124D.b

FAQ.

9/5m/o7

SvmaoL

TABLE

LUAUUP

EDEM

MtMLUP

flfilb

LUADWN
LUOPZ

@w25

AURES

@U76

LIMHI

QU74
@075
Uw76

LIMLO
M7410

@942

RLSTOR

0M77
MIUU

K261

Elwl

U1W2

CTR
TN6

Elflé
U104
WIWb

STOH

0106

NUM

@107

CUNT

@110

0111
U112

SPACE

U115

0114
0115

ERROR

0116

MtSG

0122
0144
@152
0161

CUUNT

M5K7

TyPAC
BACK

184D,8

PAGt

9/30/67

7400

ILOAO

7400

1275

7401
7402

3273

7403
7404

7405
7406
7407

7410
7411
7412
7413
7414

MEMORY

/PDP-b
*7400

FORWARD

MEMORY

LOADUP:

1276
3303

1273
3673

TAD
OCA
TAD
DCA
TAD
DOA

ADDRESS

AURES
M7400
CTR
ADRES
1 ADRES

JMP

3273

1276

TAD n74uw

3303

DCA

CTR

TAD

ADRES

1673
7041

CIA

1273
7443

TAD
52A

43:3
2273
2333
5215

JMS ERROR
352 ADRES
152 CTR
JMP MEMLUP

nenguvg

1274
3273
1276

7432

3673

064

7433

7240

7434
7435

1273
3273
2303
5231

OLA
TAD
094

3303

/SET

IUEPOSIT

/BET

TEST

ADDRESS

CONTENTS

AURES

xsxgp

AREA

STARTING

ADDRESS

1N CONTENTS

I ADRES
CMA
ADRES
ADRES
CTR

152
JMP LOADHN*4
TAD M7400
DOA CTR

FORWARD DIRECTION

/GET ADDRESS
EQUAL
ICONTENTS NOT

SAME

ADDRESS

ISELECT NEXT ADDRhSS
ISKIP

/LDAD MEMORY REVERSE DIREQTLON
LOADHNc TAD LLMHJ
DOA ADRES
TAD M7403
DOA CTR
TAD ADRES

7425
7426
7427
7430
743;

1276

DIRECTJON

AURES

7416
7417
7420
7421

7436
7437
7440
7441

30’

LOADUP¢4
LIMLO

TAD
DCA

1275

1273

PAGE

182 ADRES
152 CTR

2273
2303
5204

3303

(HIGH!

LIMLO

7435

7422
7423
7424

TEST

PAGE

1830,15

[DEPOSIT
[ACSBQ

END

TEST

AREA

ISET

TEST

AREA

ADDRESS

ENDING

CONTENTS

IAC84ADR557'1
/DECREMENT ADDRESS
/SK1P WHEN LDHER LIMIT REACHEU

ADDRESS

9/30/67

7442

ISEQUENTIAL LOCATION
LIMHI

7444
7445
7446
7447
7450
7451
7452
7453
7454

$673

TAD
DCA
TAD

7941

CIA

7455

5244

7443

1274
3273

LDOPZ:

ADRES
I ADRES

ADRES

/SK1P

4316
724a

JNS ERROR
CLA CNA

/AC=a;

1273

TAD
DDA

2277

153 COUNT

5200

7460
7461
7462

1300

JNP LQADUP
TAD RESTDR

1311

DOA
TAD

7463
7464

4344

JHS PRINT

1512

TAD

7465

4344

JMS

7466

1301

TAD

7467

4344

7470
747;
7472

4344
5290

7473
7474‘
7475
7476

0000
7377
0000
0400

7477

7640
7640
0261

COUNT:
RESTORe

K2614

.140
9&40
261

7774

M47

0000
0007
0260
0000

CTR;
HSK7.

7004
0000

3277

K261
JNS PRINT
TAD K261
JMS PRINT
JMP LDAUUP

1301

7513

7514
7515

0215
0212
0240
0301
0303

ADRESI

LJNHla
LINED:
M7400.

0
7377
0
~740 0

THBa

260

STOR.

NUM:
CONT:

RAL
0

215

2;?
240

301
303

AND

ADDRESS

EQUAL
NOT

SAME

/AC={ADRES7'1
ISELECT NEXT ADDRESS
IF END TEST AREA

COUNT

ICON STANTS

7510
7511
7512

ISKlP

132
JHP LOOP2¢2

2303

ICONTENTS

ADRES
AURES
CTR

7456

7504
7505
7506
7507

/GET

TAD
SEA

(DUNN)

ISET STARTING
CONTENTS

7440

7457

7500
7501
7502
7503

/GET

TEST

1273

3273

PAGE

1339.15

VARIABLES

ADDRESS

9/39/37

0000
7041

7522

1311

7523
7524

4344

JHS

1312

140

7525
7526
7527

4344

JMS

1314

TAD

4344

JMS

7530
7531

1273

TAD

4352

JNs

7532
7533

1313

TAD

4344

JMS

7534

1315

7535
7556
7537
7540

4344

4352
7604

TAD
JMS
TAD
JMS
LAS

7541
7542
7543

771a

SPA

7492

-5716

HLT
JHP

7544
7545

0090
6046

7546

6041

TSF

7547
7553

5346
7200
5744

JMP
CLA
JMP

INESTQRE CONTENTS

cxa
m

140
004

1273
3310

AURtS

/0F

CONT

IPUT

HESS.

131%

PRINT!

FAILING
RESULT

MESSAGE

IERROR

7551

ROUTINL

ILRROR

7516
7517
7529
7521

ERROR:

PAGE

1:30.16

140

/HALT 0N ERROR
I

ERROR

TLS

4"1
I

(SRO)

ADDRESS
IN CONT

9/30/67

7552
7553
7554

0000

7560

3306
1362
3363
1302
3303
7100

7561
7562

1306
7006

7563
7564

7006
3306
1306
0304

7555
7556
7557

7565
7566
7567

,1305

7570
757;
7572
7573
7574
7575

THERE

ARE

ERRORS

4344

1307
3363

2393

5361
5752

ITYPE

(AC)

TYPACJ

OCTAL

TAD

STOR
BACK¢1

UCA

BACK¢2

TAD

DEA
CLL
TAD

CTR

BOA

BACK1

STOR

RTL
RTL
DGA
TAD

STOR

TAD
DCA

NUM
BACK*2

ISZ
JMP
JMP

CTR

STOR
AND MSK7
TAD TN6
JHS PRINT

BACK

TYPAC

1830.16

PAGEIO

noxsn\a
Jomt>w

an<H

mdma«

van“
nx¢n

zu<m

Honn

nan“

Pzao
#2330

afinn

«hu
mamzm
flex:

m4
szaJ
04:44
m32<34
233434
mmoaJ
mDJXAz
3mg:
Nxmz
¢z

nm¢n

flan“
nsnu
oanu
Han“
mans
¢N¢u

nn¢~
sack
nmvn

N¢¢n
nfi¢m
mmnh
¢sn~
mans

ss¢xz

ok¢n

:32

mans
¢¢n5
sank

PZme
mahmux
uu<mm

mahm
oz»
04¢»?

nflnm
cans
hams

mmnn

ma.snnd

ua<1

9/60/67

SYMBOL

LOADUP
HEMLUP
LUAUWN
LOOPZ
AURES
LIMHI
LIMLO

TABLE
74DU

7415
7425

COUNT

7442
7473
7474
7475
7476
7477

RtSTOR

759M

K261

75M1

7502
7505
7504
7505

H74U0

CTR
MSK7
TN6

STOR

75U6

NUM
CONT

75B?
751w
7511
7512
7513

U
SPACE
A

7514

7515

ERROR

7516
7522
7544

MLSG

PRINT
TYPAC
BACK

7552
7561

185U.19

PAGE 12