Digital PDFs

MAINDEC-08-D1B0

December 1968

18 pages

Original

0.5MB

Document:	Memory Addresss Test
Order Number:	MAINDEC-08-D1B0
Revision:
Pages:	18
Original Filename:	https://svn.so-much-stuff.com/svn/trunk/pdp8/src/dec/maindec-08-d1b0/maindec-08-d1b0-d.pdf

OCR Text

MAINDEC-O8-Di BO-D

IDENTIFICATION

Product Code:
Product

Name:

MAINDEC-OB-DiBO—D

Memory Address Test

Date Created:

March 25, 1968

Maintainer:

Diagnostic Group

Author:

R. Green

Previous Code:

MAINDEC—O8-Di iA-D

‘——'—""—"—‘T

POP-B
LID-ARV

MAiNDECuOSmDi BOeD

/”/"\

The Memory Address Test checks For proper memory address seiection on the RUE-ad,

REQUIREMENTS

2.1

Equipment
Standard FDR-8 Computers

2.2

Storage
The low version occupies iocations QOQQeOZZZG

7400—7575, 0-3..

2.3

The high version occupies iocations

The binary ioader must be stored in the East memory page,

Prei iminary Programs
it is assumed that the only maitunction is in the memory addressing circuits,

LOADING PROCEDURE
The program is suppiied in RIM Format,

STARTENG PROCEDURE

4.]

Controi Switch Settings
Hait after error printouts

SRO

4.2

Starting Addresses
Low

Storage

High Storage

4.3

Operator Action
0.

Vb.
c.

Load the starting address into the program counter.
Set the SWITCH REGISTER to 4000, if halt on error is desired.

Push START.

OPERATENG PROCEDURE
Same as section 4.

MAINDEC-OB-Dl BO—D

ERRORS

6 .1

Error Printouts

Axxxx
Axxxx

nyyy

(Error printout Format)

(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 sc0pe 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 ii is printed after every 96 complete program loops

7. 2

Memory Maps

High-

Low

0000
0200

Test Program

Area

Tested

V
7400
Test Program
Loaders

7600
7777

Loaders

(every 28 seconds).

MAINDEC-O8—Di BO-D

PROGRAM DESCRIPTION
The program consists of tour phases which occur in the following sequence.

starting with the lowest

Phase l

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 l

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 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.

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

error.

Sample error printout:
A2560 C2760

Explanation
.2560

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

MAINDEC'-08—DIBO-D

no: 4
.

IPDR-d

9900

MEMORY

0000

5001
0002

0002
0003

LOAUUPO

JMP

0010

5004

”011
0012
0013
00;4

1075

0015
0016
DDl7
0020

.1‘73
7941
1973
7440

sea

0021

4116

.ms
IS!
:82
.JHP

DDZZ
DEZS
9024

I
PATCH

IDEPOSIT

MiMLUPo

DCA
TAD
DCA

AURLS
M1410

TAD

CIA
TAO

ADRES

ERRDR
ADRLS
CTR
MEMLUP

.3073

DCA

ADRES

0027

1976

M1410

0930

3163
1B73
3473

TAD
DCA
TAO
DCA

7240

CLA

TAD
DCA

9556
0037
0040

1073
3073
2103
5931
1D76

CMA
AURES
AURES
CTR

U041

3103

0035

STARTING ADDRESS

ADDRESS

IN CONTENTS

IbET

CONTENTS
IGET

FORWARD

DIRECTION

ADDRESS

ISKIP

ICONTENTS NDT SAME AS
/SELECT NEXT ADDRESS
IF END TEST AREA

EQUAL
ADDRESS

[LOAD MEMORY REVERSE DIRECTION
LDAUHNI TAD LIHH!

B026

D033
0034

AREA

CTR

1074

”632

TEST

.‘1

9025

@051

152 ADRES
152 CTR
JR? LUAUUP‘Q
TAD LIMLD

1076
3103

5015

ISET

JHP

3073

2073
2103

PAGE

2
3

0007

DEBS
0006

(LOH.

0003
5405
0200
2073
2103

0004

TEST

Foauanu usaaurxow

/Loao manuav

0001

ADDRESS

zsz
JMP
TAD
DCA

{SET

TEST

AREA

ENDING

CTR
AURES

AURgS

LOADHN‘4
M741”
CTR

/DEPDSIT ADDRESS

IN CONTENTS

/AC"1

ISKIP

/AC!(ADRES)-1
thCREHENT ADDRESS
HHEN LOWER LTMIT REACHEU

ADDRESS

/”\\

1/11/68

ISEQULNTIAL
LINN}

9042

1974

0343

3973

TAD
00A

0044
D045

1473
7941

TAD
czn

0946
0047
0050

1073

TAD ADRhs

4116

JMS

ERROR

U051

7243

CHA

9052
0353
0054

1973
3973

CLA
TAD
DCA

:5:

CTR
L0092~2

7469

2193
5944

0356
0557

5W90

AURES”
I

AURKS

0665

llflfl
3977

4n?
:5:
JHP
TAD
DCA
TAD

1111

DDDD

ADRLS:

761%

LIMHI:
LINLDO

BUD

M74180

97410

COUNT:
RESTONI
K2610
M4.
CTR.

'14”
I§4U
261

D195
D106
91D7
0110
M111
0112

029%
@370
7640
764%

92¢;
7774
wwua
@997
0260
mama
7ww4
nave

w215
9212

$113

9249

0114

2301

@115

9503

[SKIP

JMS PHlNT
Tao LF
JMS PRINT
TAD K261
JMS PHXNT
TAD K261
JMS PRINT
JMP LUAUUP
ICONSTANTS

‘HSKlgy

7610

TWO:

ZDB

STOHO

MUM;

RAL

CONT:

CRO

215
212
2‘0
SUI

LFa
SPACE:
3:
Co

3u3

ADDRhss

EQUAL
ICDNTENTS

NOT

SAME

/AC8(AURES)'1
/SELECT NEXT ADDRESS
IF END TEST AREA

@073
097A
0675
0076

ADDRESS

/AC=-l

RESTOR
COUNT

4144
5U90

91%;
D106

IGLT
IF

COUNT

@270

(DOWN)

ISET STARTTNG
CONTENTS

LDADUP

0971
0672

Dlflfl
9191
0102

TEST

/SK1P

ADRES
ADRES

41‘4
1112
4144
1131
4144
1101

0977

IQET

51A

2977

@061

0066
0067

LOCATION

0055

0562
9963
006‘
9065

LODPZo

PAGE 5

3&27.21

AND

VARIABLES

ADDRESS

1/11/68

3127.23

F451

’fiRROH ROUTINL
0116

0117

”000
7fl41

@120

1U73

0121

3110

4122
0123

1111
4144

4124
6129

1112

ERROR:

CIA
TAD
DCA

IHLSTORE
AURkS

CONT

/LRROR

0126
0127
013a
0131
@132
0133
M134
4135
9133
4137
414a
0141
0142
9143

HLSG'

TAD

MESSAGL

PRINT
LF
JHS PRINT

JHS
TAD

4144

TAD 1
JHS PRINT
TAD ACRES
JMS TYPAC
TID SPACE

1114
4144

1075
4152

1113
4144

JHS PRINT

1115

TAU
JHS

7713

PRINT
TAD CONT
JHS TYPAC
LAS
SPA CLA

7442

HLT

5513

JMP

4144

1110
4152
7694

PHINTo

BEEB
6646

TLS

@146

6041

TSP

”147

5146
7290

JHP

5544

/H4LT 0N ERROR
I

ERROR

@144
@1‘5

9159
0151

CONTENTS
IOF FAILING ADDRESS
IPUT RESULT IN CONT

CL‘
JHP

(SRO)

1/11/68

0000
0152
3196
0153
1162
0154
5163
9155
1102
0156
5103
0157
71mm
@160
1106
0161
7006
0162
7006
$163
0164' 31v¢
1106
0165
0104
0166
11 5
167
170

4194

@171

11w7

172
173

3163
2103

0174

5151

0175

5552
9200

0206

1215

0291

sane

0202
9203

Jami

TYPAC:

IN
:

DOA
TAD
DCA
AD
CA

B‘CKo

CLL
TAD
R

OCTAL

STOR
BACK¢1
BACK‘Z
HG
CTR

STOR

ah
DGA
TAD
AND

STOR
STOR
MSK7

T‘0 THO
JMS PRINT
Tao NUM
DCA .B‘CK¢2

:sz CTR

OUZUB
PATCH!

BACK

JMP

TAD

TYPAC

Tip x1

1216

1
xz

3002
1229

DCA

TAD

sums

DCA

@219
@211

1221

TAD

aww4

0212
0213
0214

1222

DCA
>TAD

DCA

JHP

”2&5
0216
@217
0220
0221

1975

TAD

LIMLO

@222

3473

DCA
TAD
DUA
TAD
UCA

AURES
m741m
CTR
AURLS
1 AURES

0206
@207

‘K\,_

(AC)

DUA
TAD

0294
0205

THERE

ITYFE

ARE

1217

3005
some

3073

1076
3103

1973

tRRORS

PAGE

3:27.5w

XU:
X1:
X2.
X5:
X4;
X5;

/HE$TORL

1$T

PAGE

1/11/68

SYMBOL TABLE
‘

011

AURES

$27

BACK
C

0161

CONT
COUNT
CH
CTR

ERROR
K261
LF

LIMHI
LIHLO
LUAUUP
LUADHN
LUOPZ
MEMLUP
"L55
HSK7
M4

M7410

3115
011%
5077

0111
9123
0116
0121
0112
ao74
aa75
even
9925
0042
@015

6122
0164
1

NUM

o1m7

PATCH

220%

0144

RLSTUR
SPACE
STOH

@100

TH6

TYPAC
XU

0113

azao
6195
0152
9215

0216
0217
azzw

@221

@222

3127.35

PAGE

1/11/68

SYMBOL TABLELOAUUP
HLHLUP
LUADHN
LUOPZ

@839

ADRES
LINN!
LIMLO

9&7}
BU74
@075
2376
0077

"7‘10
COUNT
RtSTOR
K261
HG

CTR
HSK7
Two

STOR
NUH

CUNT
CH

5015
3025
0042

B109
6191
0132
8103

@104
0195
@106

@1B7

311

LF
SPACE

@112

311‘

€115

ERROR

2116

HtSG

9122

C144

TYPAC
BACK

V152
9151
622%
0215
0216
0217

0115

3229

0221
9222

5327.38

PAGL

IPDP'U
7400

MEMORY

ADDRESS

TfiST

(HIGHA

PAGE

.1/11/68 5830.26
PAGE

33)

0746B

ILOAD MEMORY FORWARD DIRECTION

7490

1275

7401

3273

7432

1276

LOAUUFa

TAD

LTHLO

DCA
TAD
DCA
TAD
DCA
Isa

AURES
M7400

7433

3303

7404
7495
7456
7407

1273
5673

7410

5204

7411

1275

7412
7413

3273

TAD
DCA

1276

TAD M7ADD

7414

3303

DCA

CTR

7415
7416
7417

1673
7041
1273

TAD
CTA

7426

7440

SiA

7421

4316

2273
2303

xsz
JHP

HEMLUP;

CTR
Aunts
I AURLS

AURLS

ERROR
AURts
CTR

7425
7425
7427

1274

ILDAD MLHURY REVEHSL
LOADHNa TAU LTHHI

3273

DEA

1276
3305
1273

TAD
DCA
TAD
DUA

7437

744%

7441

1273
5273
2393
5231
1276
3303

CONTENTS

/SKTP

5215

7435
7456

zoET

TAD AURES

7424

3673
7249

CLA
TAD
DCA

[52

STARTING

ADDRESS

CONTENTS

A0R£s

JHS
:52
TS!
JHP

7432‘
7433
7434

ADDRESS

AREA

LDAUUP‘4
LTMLO

2273
2303

7430

IDEPDSIT

TEST

AURES
CTR

7422
7423

7451

/SET

FoRHARD

DIRECTION

thT ADDRESS
EQUAL
[CONTENTS NOT SAME AS
/S£LECT NEXT ADDRESS

/5KTP

END

TEST

AREA

/S£T

TEST

AREA

ADDRESS

MEMLUP

UIRECTION

AURiS
M74DD
CTR
AURtS
1 Aunts
CMA
AURLS

AURCS
CTR

LUAUHN‘G

JMP
TAD

MIADD

RCA

CTR

IUEPOSIT

ADDRESS

ENUING

CONTENTS

IAcfi-l

[SKIP

/ACI(AURES)'1
IULCREMENT AOURLSS
WHEN LOWER LTHIT REACHEU

ADDRESS

1/11/68

leUULNTIAL
7442
7443
7444
744!
7444

1274
3273

LUOPZc

1673

TAD
DCA
TAD

7541
1273

CIA

7447

744a

31A

7459

4316

7451

7240

7452

1273

7453
7454
7455
7454
7457
7442

3273
2393

JMS
CLA
TAD
DCA

7441

/Gtr

2277
5252

1320

TAO

3277

OCA
TAD
JMS
TAD
JMS

1311

7445
7444

4344

1501

TAD

7447

4344

JHS

K261
PRINT

TAD

K261

4344

7472

52mg

JMS
4MP

PRINT
LUAUUP

7473

0606
7377

ICONSTANTS

0
.140 Q

COUNT:
NESTOR:
K2614

I14”
~14U
261

H4;
CTR:

7J77

0261

75E3

name
0007
026%
0240

STDRo

7254

NUM:

RAL

0440

CUVTI

5215
2212
4242

CH;
LFI
SPACE:

215
212

2321

‘4
Co

7594
7595
7506
75%7

751%
7511
7512
-7513

7514
75:5

\M/

AURLS:
LIMHII
LIMLOJ
M7‘UU:

7501
75U2

7774

5323

LP
pHINY

1321

7640
7442

ISKIP

7479

MSK’.

wao

20“

240

301
303

ADDRESS

EQUAL
ICDNTLNTS

NOT

SAHL

lACltAURES)'1
/SELECT NEXT ADORLSS

7471

ADDRESS

IAC'=1

RESTOR
COUNT

4344

7500

ERROR

CHA
AURLS
AURLS

STARTING

CONTENTS

ISKiP

7442

7477

leT

JHP

1512

(UOHN)

/ShT

AURES

152 CTR
LOOPZ*Z
152 COUNT
JHP LUAUUP

@600
BGUB

TEST

AURhS

7463
7444

7‘74
7475
7476

LOCATION

LIMHI

TAD

5244

PAGE

375$,31

ANU

VARIABLES

END

TEST

AREA

ADDRESS

1/11/08

PAGE

5:32.35

ROUTth

ILRROR

7516
7517
7520

7521

EEUB
7041

ERROR:

1273
5310

IRESTORE

CIA
T40

AURES

CONTENTS
/OF VAILING

DEA

CONT

IPUT

MESSAGE

ltRRoR

7522
7923
7524
7525

1311

MLSG:

4344

1312

TAD

JHS
TAD

4344

LF
JMS PRxNT

7526

131‘

TAD

7527
755%

4344

JMS
TAD
JMS

PRINT
AURLS
TYPAC

1273

7531

4352

7532

1315

7533
7534

4344

TAD spACi
JMS PRINT

1315

TAD

7535

4344

JMS

PHgNT

7536

1519

TAO

7537
7542

4352

JMS

CUNT
TYPAC

7684

LAS

7541

7716

SPA

7542
7543

7422

HLT

5716

JMP

7544
7545

7546
7547
7559

7551

908%
6U46

PRINT;

RESULT

CLA
anLT
1

EHHuH

TLS

6941
5346

TfiF

JMP

.«1

7290
5744

CLA
JMP

LHROR

(SHE)

ADDRESS
IN CONT

1/11/68 3330.39

0000
3506

7552
7553
7554

1362
3363
1302
3303
7100
1306

755!
7556

7597
7560

7561
7962

(AC)

TYPIC:

DOA

BACK.

TAD
AND
TAD

1305

7571
7572
7573
7576
7575

1307
3363
2303
5861

0001
0002

5752
0000
0000
5001
0002

0003

ARE

ERRORS

0000

BACKtZ

TAD HQ
DOA CTR
CLL
TAD STOR

RTL
RTL
DCA STOR

0304
034‘

STOR

TAD BACK*1

1506

7570

IN OCTAL

00A

7006
7006
3506

7563
7564
756!
7566
7567

THERE

ITYPE

STOR
MSK?

Two

JMS paxur
TAD NUM
DOA BACK‘Z
182 CTR
JHP BACK
JHP 1 TYPAC
‘0000
0

JMP
2
3

PAGE

1/11/68

SYMBOL
A

AURES
BACK
c

CONT
COUNT
CR
¢TR
ERROR
K261

LF
LIHHI
LIHLO
LUAUUP
LUADHN
Luopz
HEMLUP
MESS
MSK7
M4

M7400
NUM

PRINT
RESTOR
SPACE
sroa
THb
TYPAC

TABLE
7714
7473

7561
7615
7510
7477
7511
750a
7516

7901
7512
7474
7475
7400
7426
7442
7415
7522
7504
7502
7476
7507
7544
7500
751a
7506
7505
7552

3!3@.¢2

PAGE

1/11/68

sYMBUL TABLE
LOADUP

740“

HEHLUP
LOADHN
LOOPZ

7415
7425
7442
7475
747‘

ADRLS

LINHI
'LWLO
HI‘BE

COUNT
RESTOR
K261
H4

CTR
HSK7
TH6
STOR

7475
7476
7477
7555

7501
7502
7553
7504
7555

CUNT

7555
7557
7515

7511

LF
SPACE

7512
7513

7514

C
ERROR

7515

NUM

7516
7522
7544

TYPAC

7552

BACK

7561

HESS

573$.45

PAGh