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MP00534

November 1977

126 pages

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Document:	KC780 Field Maintenance Print Set
Order Number:	MP00534
Revision:	000
Pages:	126
Original Filename:

OCR Text

“THE MATERIAL HEREIN IS FOR INFORMATION PURPOSES ONLY
AND IS SUBJECT TO CHANGE WITHOUT NOTICE. DIGITAL EQUIPMENT
CORPORATION ASSUMES NO RESPONSIBILITY FOR ANY ERRORS

WHICH MAY

APPEAR HEREIN."

“THIS DRAWING AND SPECIFICATIONS, HEREIN, ARE THE PROPERTY OF DIGITAL EQUIPMENT CORPORATION

CORPORATION.”

.DIGITAL EQUIPMENT

TABLE OF CONTENTS

B=DD-KC78@-g-0
E-UA-KC78¢@-8-0
A-PL~-KC78@~-g~@

KC784
KC78F
KC780
KC78@

E-AD~-7013926-0-0

SCP AND

A-PL,-7013926-0-0
A-PL,-7013679-0-0

SCP AND CONSOLE ASSY (PL)
RELAY ASSY (RXZ1)
RELAY ASSY (RxX@1l) (PL)

D~-UA-5412932-~0~-0

SYSTEM CONTROL

B-PI1,-5412932~-0-0

SYSTEM CONTROI. PANEL

B-TC-KC78g~-@g-1

E-AD=-7013§&79-0-0

CONSOLE
CONSOLE
CONSOLE
CONSOLE

ASSY
ASSY
ASSY
ASSY

(TC)
(DD)

(PL)

CONSOLE ASSY

D-CS~5412932-0-1

SYSTEM CONTROL

D-CS-M7944-g-1
D~-CS-Mo4g@~-F-1
D-CS-M7946-g-1
D-UA-BC@5L~-3-¢
B-DD-RX@1-~@
B-DD-11/03-0

4K RAM

INTERFACE

CABLE

JUMPER

PRINT SET

KC788-AA
KC780-AB

PANEL

(PL)

KC78@-AC

PANEL

LSI1l1 REF BOOT CABLE
LSI1l

UNIT VARIATIONS
COVERED BY THIS

CONN.

RX@1 FLOPPY DISK UNIT ASSY
UNIT ASSY 11/03 (FULL SET)

KC78¢

(FULL SET)

Field Maintenance

Print Set

Digital Equipment

Corporation
PRINT

SET CORDER NO.

MP@0534

(LTE) GLIN-9L- PZLLO-NT

w | o
2

5|g

11780

DRB 124

77|

DATE

D. HEALY

|NOV 77

¢Yoo

w5
|8

FIELD SERV.

SHEET I OF 1

|SEP

CHK'D

PROJ. ENG.

w
g
<

BOUDREAU

S|°

[dJJ lg iltlall

DATE

useD oN opTion/moDeL | PRN-

]

KC788 CONSOLE ASSY

DATE
DATE

na
fay
| £77
/Q}/m;fiDitws,

SIZE

DIST.

CODE

NUMBER

KC780-0-1

REV.

“THE MATERIAL HEREIN IS FOR INFORMATION PURPOSES ONLY
AND IS SUBJECT TO CHANGE WITHOUT NOTICE. DIGITAL EQUIPMENT
CORPORATION ASSUMES NO RESPONSIBILITY FOR ANY ERRORS
WHICH MAY APPEAR HEREIN.”

“THIS DRAWING AND SPECIFICATIONS, HEREIN, ARE THE PROPERTY
OF DIGITAL EQUIPMENT CORPORATION
AND SHALL NOT BE REPRODUCED OR COPIED OR USED IN WHOLE
OR IN PART AS THE BASIS FOR THE MANUFACTURE OR SALE OF ITEMS WITHOUT WRITTEN PERMISSION. C OPYRIGHT © 1977
DIGITAL EQUIPMENT CORPORATION.

DRAWING DIRECTORY

UNIT VARIATIONS

VAR
KC780-AA
KC78@-AB
KC788-AC

TITLE
KC78@ CONSOLE ASSY 115V 60 HZ
KC78@ CONSOLE ASSY 236V 50 HZ
KC788 CONSOLE ASSY 115V

50 HZ

< o%&

1SS

DRB 106A

DRN.

11780

BOUDREAU

SHEET

HEALY

NOV 77

YRR

ISIZE

|CODE

DATE |,

/DD

;

U«J R
v

tiall

DATE

PROD.
OF

PBEP

CHK'D.

TITLE
:

PRO). ENG.

X |X

DATE

bh g]
.

USED ON OPTION/MODEL

KC780 CONSOLE ASSY

DATE.

1)/ oisT.

NUMBER

KC786-0

REV

5.
“THIS DRAWING AND SPECIFICATIONS, HEREIN, ARE

THE PROPERTY OF DIGITAL EQUIPMENT CORPORATION

\1/"

AND SHALL NOT BE REPRODUCED OR COPIED OR USED

;

IN WHOLE OR IN PART AS THE BASIS FOR THE MANU-

FACTURE OR SALE OF ITEMS WITHOUT WRITTEN PER-

MISSION.

KC78@ CONSOLE ASSY i
E-UA-KC78¢-F-0

A-PL-KC78@-@-@

<§>
(}D

’\'

RX#1l AND PIVOT ASSY
B=PI~=7016482-0-0

B-DD-11/03-0

RX@1l FLOPPY DISK

B=-DD=-RXZ1-@

FRONT COVER ASSY
(11/03)

D-AD-7014438-0-0

Q;}

FRONT COVER

)

UNIT ASSY
11/03

UNIT ASSY

L
T LN AAT 8 |

‘r "-"\;

W
j
1

D-IA--7013677-0-0

SCP AND CONSOLE
ASSY

A-PL-7013926-0-0

\ E-AD-7013926-0-0

CED

'/ ’ ‘\“

4K RAM
B DD-MSV11-B

Qs
|

1LSI1l REF BOOT
CABLE CONN
D-CS-M940¢-0-1

SYSTEM CONTROL

PANEL

B-DD-5412932-0

WELDMENT

RX@1l PIVOT
BRACKET

E=3IA~7016484 -C -0

’ RX@1 CONTROLLER
RELAY ASSY

(RX@1)

(6)+ A-PL-7013679-0-0
E~AD-7013679-0~0

<:>_”_

i B-DD-RXV11-00
|

COVER ASSY Rxgl
POWER SUPPLY

E-IA-7014434-0-0

PLENUM ASSY

(=xg1)

D-AD-7016483-0-0

FAN ASSY

C-IA-7013928-0-0
TITLE

DRB 107

KC78,G CONSOLE ASSY

SIZE

SHEET 2 OF 4 B

ODE

NUMBER

KC780-0

;

DRAWING NO.

1 | Mp@g@g534

B=-TC=-KC788-@#-1

E-UA-KC78¢-g-g

A-PL-KC784-g-0@
C-=IA=-7014242-0-0

C-IA-7014243-0-0
B=MD-7414928-0-0
D-UA-BC@5L-g-#

DESCRIPTION

KC78@ CONSOLE ASSY (MP)

DRAWING NO.

KC784 CONSOLE ASSY (TC)

D-IA-7417858-0-0

KC784 CONSOLE ASSY

B-IA-7014449-0-0

E/M

FLOPPY RELAY SCP POWER CABLE
PIN, PIVOT
CABLE, JUMPER

E/M
M
E/M

7 | E-IA-7014434-0-0
E-MD-7418113-0-0
C-MD-7419283-0-0

|E-AD-7016482 -0-0
B -p1,-7016482 -0-0

RX@#1 AND PIVOT ASSY
RX@1 AND PIVOT ASSY (PL)

M
M

B=MD-7418129-0-0

ARM, LOCKING

D-MD-7417863-0-0

C-MD-7418150-0-=0

3 | B=DD=RXg1-g

COVER,

REIAY (RX@1)

HANDLE (RX@1)

| D AD-7016483-0--0

]

RX#1 FLOPPY DISK UNIT ASSY

FAN ASSY

POWER CORD,

FAN

E/M

F’M

B-DD-11/03-0

UNIT ASSY 11/03

E’M

FRONT COVER ASSY (11/03)

E/M

12|

jj’

]

dl||g||

D-IA-7013677-0-0

FRONT COVER

D-MD-7418959-0-0

COVER,

C-MD-7418960-0-0

RETAINER, FILTER

E-AD-7013926-0-0

SCP

ASSY

A-PL-7013926-0-0
D-MD-7418102-0-0

SCP AND CONSOLE ASSY (PL)
COVER PROTECTIVE (COMPONENT BOARD)
SIZE |CODE

M
M

13|

ELECTRO/MECHANICAL

(RX@1)

C-IA-7013928-0-0

D-AD-7014438-0-0

E/M

C-IA-7014951-0-0

M || 11|
M

DRB 108A

(RX@1)

BRACKET, RX#1 SUPPORT
BRACKET, RX@l PIVOT ENCLOSURE

ELECTRICAL

PLENUM ASSY

D-IA-7422403~0-0
D-IA-7422404~-0-0

POWER SUPPLY COVER

BRACKET, FAN AND PLENUM MTG.

M MECHANICAL

SCREEN,

D-IA -7422400-0 O

TYPE:

M
M

TRAY PLENUM FILTER

SLEEVE

(PL)

COVER ASSY RX@1 POWER SUPPLY
COVER, RX@l POWER SUPPLY

)

PLENUM

|WELDMENT RX@Ll PIVOT BRACKET

RELAY ASSY (RX@1)
RELAY ASSY (RX@l)

E/M

B-MD-7422399 -0 -0

B-MD-7417959-0-0

E-AD-7013679-0-0
A-PL-7013679-0-0

CABLE, RELAY CONTROL

D-IA-7422398~0 O

E-IA-7016484-0-0

;;_

(RX@I1)

10|

BACK PLATE

E/M
E/M

KC788 CONSOLE ASSY (PL)
POWER CONTROL CABLE

DESCRIPTION

E/M
E/M

all

TITLE

KC78@ CONSOLE ASSY

FRONT

AND CONSOLE

SHEET 3 OF 4 B DD .

NUMBER

KC780-0

REV

Q
Z

DRAWING NO.

C-IA-7418969-0-0

E=-MD-7418167-=0-0

DESCRIPTION
STRIKE PLATE

(TOP FRONT)

E/M

15 |B=PD=MSV11-B
-

4K RAM

E/M

16 | D=CS=-M9%4gg~-g~1

LSI1ll REF BOOT CABLE CONN,

E/M

18 |B=DD-RXV11-~Q0-

RX#Y. CONTROLLER

E/M

ELECTRICAL

Erm QEEC:T"\RN(;?A:éCHANICAL

DRB 108A

DRAWING NO.

TITLE

KC780 CONSOLE ASSY

[9%]

DESCRIPTION

SYSTEM CONTROL PANEL

FRONT PANEL REWORK

14 | B-DD-5412932-0

TYPE:

ldlllgll tall
ol

SHEET 4 OF 4 B DD
SIZE |CODE

KC786-0
NUMBER

REV

8
e

_—

LEGEND

KC-788AA |

ISV, GOHE

KC-76PAC|

230V

_KC-78¢AB

NOTES:

‘PART NO. | DESCRIPTION_

L} REMOVE EXISTING FRONT COVER FROM
ITEM5 OR 6 AND REPLACE WITH ITEM II.
2) FOR SYSTEM INTERCONNECTION SEE

HS Vs SO HZ

SOHZ
|

D-IC-H78¢-p-3,

3) FOR SYSTEM CABLE INTERCONNECTION SEE
D-IC-1178¢-0-2.

4) FOR SYSTEM A/C INTERCONNECTION SEE
D-xC-n789-9-1.
§.) ITEMS 12,13, AND 14 FOR SHIPPING PURPOSE
ONLY.

FORITEMS I5 € /6, SEE SHEET 3, MODULE
UTILIZATION 11/03.

TO JI9 OF CPU BACKPLANE

7 ReF

POWER CONTROLLER

Sor (5EE NoTE)

1,2.0r3

—

I (SEENOTE 1)
0¢aty
2>

REF
l?2>2 PEF

FOR PARTS LIST SEE A-PL-KCT78p-¢
\%

=% g

Nt?
g
S é,‘
0

oy
od

AT
T RS
o TR

ofh7

S|y
x

5
R

[

T
k-

VAnumou. wcnomcyes | PREFERRED(3| 20wz | 2on | 2om | 2ot | 268 dsay |
v

O] awe] sem | o amg | wom | e

7A gy]
e

UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES

o
e

KC‘78®

CONSOLE

ASSY

NUMSER

KCT780-C-0

Ty o
u.-wu

T o
R

]

[

l-‘!‘=l

o cmvsar
;

‘

PI\ REF
\

)

g
X

[13( Pz REF
TO POWER CONTROLLER

14 (qry 2

22@rva)

TO JI9 OF CPU BACKPLANE

| (REF. ITEMS 32 ¢ 10)
/pz REF
'

=
<

18 REF}\/OR

2! REF

23REF

—

TOP
o]

fa———0o0 70 T} OF
DLV MODULE

BorTom

VIEW A-A

SCALE. NONE

2 REF

S ReF

_—

/ /

\T(qvYx2)

(SEE CHART O

SHEET D FOR

OMMECTIONS)

e Tom

[

B
Elualk(780-08 -2
ASSY
COJ‘(:]S?(')E?E
177
e Z o 3 [ost ] ] T T T T 1T 1 {1

[SME

NOTES:
|.

[

FOR MORE DETAIL QF OPTION
CONFIGURATION, CONSULT [NDIVIDU
AL
OPTION MANUALS.

* M5V

RESULT

MFMORY BANK SELEC
T

RESIDENT MEMORY AT BANK ¢
LTC INTERRUPT

| (20000-37776

ENABLE MEMORY BRPLY
L DURING
REFRESH

ENABLED

MEMORY REFRESH ENABLED

)

POWER UP AT [73000

DISABLES RESIDENT MEMORY

BRPLY

DISABLES

BRPLY

DURING

RESIDENT

MEMORY

REFRESH

ENABLES

BOARD

MEMORY SELECT

* RXVH

SHOULD

ADDKESS JUMPERS SET TO DECODE
AT

VECTOR JUMPERS

SET
TO DECODE AT ¢0-64

PARITY
| STOP BIT

DATA

ADRS;

77560 -177566

CONN)

JI- CONNECTS TO CPy BACKP
ANEL 47

BITS

J2- CONNECTS TO CPU
BACKPANEL J&

THE BCOSL-|O

HALT ON

264

THE RIBBON CABLE FROM
THE RX@| SHOULD BE
INSTALLED WITH THE RED
STRIPE TOWARD THE

CENTER OF THE MODU
LE
* M9400-YE (LSI REF BOOT
CABLE

X DLV
NO

PRE-CONFIGURED FOR:
177/70-177172

VECTOR
%

SELECT

CABLES

SHOULD BE

INSTALLED WITH THE RED
STRIPE TOWARDS
THE CENTER OF THE MODUL
E

FRAMING ERROR

300 BAUD

1B nie PO e X el

20 ma CURRENT LOOP
ACTIVE ON TRANSMIT
AND RECEIVE OR FIA
OPERATION

KCT80 SUBSYSTEM
CONFIGURATION

NEVIRONS

¥ SEE NOTE |

Ox| cwwEN.
| mev.

TME

KC780 CONSOLE

CAE
T

QUANTITY / VARIATION

DIGITAL EQUIPMENT CORPORATION
MADE BY
DATE

ENG
DATE

P. BOUDREAU
3=AUG-77

K. DUGGAN
10-NOV=-77

DRAWING NO.

1 E=-AD-7716482-@~@#
2 E-~AD-7#16482=@-%
3 | E-AD-78416482-@-@
4 | E-aD-7#13926~-g-F
5 E-UA=-11@3-g-&
6 E-UA=-11@3-@g-@
7 C-IA-7814242-@~@
8

Cc-IA-7814243-g~¢

CHECKED R.J. RILEY
9-12=77
DATE

PROD
DATE

R. GIRARD
11-2-77

SECTION

DESCRIPTION

7416482-g1
7816482~-@2

RX@1l AND PIVOT ASSY
RX@1 AND PIVOT ASSY
RX@1l AND PIVOT ASSY
SCP AND CONSOLE ASSY

781648283

1 |-

|POWER CONTROL HARNESS
FLOPPY RELAY SCP PCWER HARNESS

111

c.I.B.

REF |REF| REF

7414242-¢8
7614243-21

REF |REF| REF

BACKPLANE ASSY
FRONT COVER ASSY

ogg978@-g¥

|SCREW SEMS P.H. TRUSS 10-32x.5¢

REF |REF|REF

9¢@7786~g¢

|RETAINER "U" NUT #10-32

REF |REF |REF

og@9791-g@#

|SCREW SEMS P.H, HD. 6-32x,.31

4K RAM

1|1

1.SI REF BOOT CABLE CONN,

1|1
2

15|

B=DD=-MSV1l-g

REF DESIGNATION

1 - |- |1 - - 11

UNIT ASSY 1143

1143-AB

11| D-AD=7@14438-g-@

UNIT ASSY 1143

1g| E-IA-7013628-g-F

o
<

1|1
- 11

11Z3-AA

9 | E-UA-M8236=-g-g

al
=

°1 213
~l5 >

ISSUED SECTION
\

PART NO.

<|
1 o<l

NOTES:

16| E=UA-M94@@g-YE-g
17| D-UA-BC@5L-g-@F

BC@5L-1d

CABLE BC@5L

18| D-IA-78165@3~-F-F

78165@3-g4

TERMINAL ADAPTER CABLE (H78d5)

REF |REF |REF

19| B-DD-RXV11l-gg

RX@1 CONTROLLER

2¢| B-MD-7414928-@-¢

PIN, PIVOT

gcQ

sS
ol

AREOR THECOPIEDPROPERTY
HEREIN,ODUC
SPECIFICAT
**THIS DRAWING
IN PART
OREQUIPMENT
WHOLE
EDOR USEDOFINDIGITAL
REPR
NOT LBEIONS,
ON ANDANDSHAL
CORPORATI
wl b

AS THE BASIS FOR THE MANUFACTURE OR SALE OF ITEMS WITHOUT WRITTEN PERMISSION.
COPYRIGHT © 19 71 DIGITAL EQUIPMENT CORPORATION"
DRB 126

TlTLE

KC784 CONSOLE ASSY

NO. 780~-@-0
ASSY E-UA-KC
SHEET

SIZE
PL
B | CODE

NUMBER-¢
KC780-G

INSERTION PARTS LIST DATA BASE REV

REV.B

DIGITAL EQUIPMENT CORPORATION

NOTES:

QUANTITY / VARIATION

PARTS LIST

MADE BY
DATE

P. BOUDREAU
3-AUG=77

CHECKED
DATE

ENG

PROD

DATE
ITEM
NO.

21|

DUGGAN

10-NOV=-77

DRAWING NO.

SECTION

D-UA-BCE3L-g-@

GIRARD

11-4-77

‘

ISSUED SECTION

PART NO.

A-PL-H78@5-F-@

23|

DATE

R.J. RILEY
9-12-77

DESCRIPTION

REF DESIGNATION

H78@#5 FILTER CONNECTOR

REF |[REF|REF

9d@656d-gF

|NUT,

KEPS #6-32

BC@3L-@#5

FILTERED CABLE ASSY BCZ3L

REF |REF | REF

o
2

o:‘

*“THIS DRAWING AND SPECIFICATIONS, HEREIN, ARE THE PROPERTY OF DIGITAL EQUIPMENT
CORPORATION AND SHALL NOT BE REPRODUCED OR COPIED OR USED IN WHOLE OR IN PART

AS THE BASIS FOR THE MANUFACTURE OR SALE OF ITEMS WITHOUT WRITTEN PERMISSION.

DIGITAL EQUIPMENT CORPORATION"

TITLE

ASSY NO.
KC78d

CONSOLE

ASSY

SIZE | CODE

E-UA-KC788-g-0
SHEET

NUMBER
KC78¢-0-¢

INSERTION PARTS LIST DATA BASE REV

REV.
B

|
3"’?‘

24T
i ron T

oW OF

]

‘

NOTES
e

#g /AND
|, REMOVE PEEL-OFF LINER OF ITEM#8

it e Seleld
i

ASSEMBLE TO ITEM
¥ | AFTER
¥4 § 2 HAVE
)
SSEMBLED
BEEN
ASSEMBLED
TO ITEM*#I.

FRONT ViZW

\Vfiv

———————

5@QTY. 2)

o
~
FOR PARTS
LIST SEE A PL il
7013026 5.0

—

QUANTI

VARIATION

REVISIONS

1ant

g3l onk] cHANGE MO,
1
i

il W

NOWINAL

—

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N0
SREAK SHAAP CORNERS
DO NOT SCALE DWG

MATES

ACCURACY \><

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i

IOHECK D)

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ENG. 0/,
PROJ.ENG,
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NEXT RIGHER ASSY,

E{A-KC780- ¢

)

es | PREFEARED C)|

_%A_fl.‘-_'vi_ TALE_ |7
.

DWG./PART NO.

THERWISE SPECIFIED DIMENSIONS
ARE

2° 30

DESCRIPTION

ANGLES

SEET

OF |

{

F ogfi 70'39’”“2%1(‘ -0 ! -

oisv. [

{

IEI i

REAR VIEW

DIGITAL EQUIPMENT CORPORATION
—
ADE D

TAYLOR

DATE
3 AUG 77
ENG /) i,

DATE /C —tB- 7>
ITEM

NO.

QUANTITY VARIATION

MAYNARD, MASSACHUSETTS
PARTS LIS,I/'
cuecxe??,(
:

DATE
PROD

G~12-20
’IQ’*W £

DATE

‘0\\%\'\1

DWG NO./PART NO.

SECTION

ISSUED SECT.

T
0

g
P

DESCRIPT'ON

[E-MD-7418167-0-0

D--UA=5412932-0-0

SYSTEM CONTROL PANEL

D-MD-7418102-0-0

COVER,

1213283-0-0

KEY LOCKS

19009701-00

SCR,

PAN HD.

9006021-02

SCR.

FLAT COUNTERSUNK

3614611-0-0

DECAL

C-IA=-7418969-0-0

STRIKE PLATEC

FRONT PANEIL REWORK

TITLE

PROTECTIVE
5

1
1

(COMPONENT BOARD)

PHL.

SEMS

#6 -

HD,

32 x 5/16

PH.6-32

DEC FORM
DRA 110

.31

ASSY NO.

SCP AND CONSOLE ASSEMBLY

POSITION

SIZE | CODE

E-AD-7013926-0-0
SHEET
-

NUMBER

ost

REV

7013926-0-0
|

711

L]
_

s
‘w“':"%_ AR

e DESCRPTION

‘

4 | 1® | Bk

WIRE TABLE W5V €230V
FROW

e
e ot swsarar | NO | AWG_[COLOR | _CONN
15

16
14

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)

33-BlU

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J2-GRN

J2- WHT
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Bk | v BOTTOM

B
[Vd
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— | Ko
— | kid

“

ASSTMUMBER T VARIATION

WiTh

] REWARKS

~00_|USING
ITEMS 345 [1I5V OPE

[em'8

70136719-01__|USING ITEMS 4¢G P30V OPERATION]

)

LEGEND

—
j—

NOTE: WIRING INFO SAME FOR 115V ¢ 230V

J3Rer

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DIGITAL EQUIPMENT CORPORATION

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1210202 -00

1209983-00

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9006022-01

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DEC FORM
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9006634-00
9006560-00

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12-09941-05|
12-12204-00|
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QUANTITY / VARIATION

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PART NO.

DESCRIPTION

1214819-00

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| 120000 - 7137776
| 140000 -157770

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OUT |OUT | IN | 24-28K
OUT

SELECTION

160000~ 177776

ENB! ENB@
SYNC

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A
REVISIONS

CHK |

CHANGENO.

(RAM € DRIVER)

| REV.

TITLE

DEC. FORM No.

SCALE

8
6

SIZE|

4K RAM

——/F—

[SHEET
2

3 OF

€]

NUMSER

REV.

DICS| M79-0
44
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AH
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H—2 a2

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A2
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% ns

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51z

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[Rev.

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cas L2154 zas

(RAM € DRIVER)

SIZEJCODE

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H

T T

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cas L1509 zas

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£3

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ps n

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£29

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4K RAM

E13

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T30

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E26

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4K_RAM

- - -

[OKe M7944~ @ - 1 1

SCALE

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NUMBER

D[CS| M7944
-9 -|
4 0F

Jost.|

[

/DA/

]

+THIS DRAWING AND SPECIFICATIONS, HEREIN, ARE TRE

fi‘{%fi%&%fi"fi%fi%fi‘

PART AS THE BASIS FOR THE MANUFAC

COPIRIGHT© | 7.8 DIGITAL EQUIPMENT CORPORATION"

N OTES'

1. 8D INITL AND INIT H ARE SIGNALS

THAT ARE USED ON THIS MODULE.

2.A STANDARD

ROM STARTING

| [T =ooren]zig] 2|

GENERATED BY THIS MODULE

LOCATION

FOR THE

FOLLOWING

BOOTSTRAPS HAS BEEN ESTABLISHED. ALL FUTURE REV I1-X'S
THAT INCLUOR ANY OF THESE BOOTSTRAPS SHOULD USE THE

SAME STARTING LOCATIONS. IF A NEW BOOTSTRAF 1S ESTABLISHED,
PLEASE ECO THIS NOTE TO INCLUDE THE DEVICE AND STARTING LOCATION.

% PERTAINS TO REVII{-AC AND J ONLY.
¥% PERTAINS TO REV il-HK AND L ONLY.
* %% PERTAINS TO REV II-N ONLY.

STARTING LOCATION

BOOTSTRAP
*, RX®!

15242

*_ RKOS
* .CPU DIAGNOSTIC

15650
173302

1654 06

*_ ABSOLUTE LOADER
(MEMORY ADDIFYING)

% .CPU DIAGNOSTIC

173000

* MEMORY DIAGNOSTIC

173626

*%. REMOTE - 1!
»%., REMOTE-| SECONDARY

173000
173006

*%. RXD!

173700

(NON-MEMORY MODIFYING)

* .0DT

DOWNLINE LOAD

173000

* % % RX@E

3. ADJUST RI6 SO THAT THE DMA REFRESH FREQUENCY MEASURED
AT EIS PIN8 IS AS FOLLOWS:

MAX. FREQUENCY SETTING; 33.6 KHZ(29.76y4s)
4s)
NOM.FREQUENCY SETTING; 33.3 KHZ (30.03

MIN. FREQUENCY SETTING; 33.0 KHZ(30.30us) -

THIS FREQUENCY IS PRE-SET AT THE FACTORY AND SHOULD

[TT4

NOT BE ALTERED.

4 FOR - YN VARIATION SUBSTITUTE THE FOLLOWING [ C.'S :
P/N 23871A9-00
P/N 23872A9-00
P/N 2387349-00

P/N 23874A9-00
NUMBER

[oES) MO400-0-|

E19,
gee,
E25.
E29.

QTYI

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PART NO.

DESCRIPTION

[

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7 AND 14
GND AND 5V ARE USUALLYAREPINSTATED
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IC_PIN LOCATIONS

Lo wj?.-:.:%f! B

88 (16

IC 8196

LM P18y

REF. DESIGNATION

DEC NO.

A X

DEC NO

EIA NO.

EA NG

SEMICONDUCTOR CONVERSION CHART
3

B e [TNEXT HIGHER ASSY

SHEET | L oF 5
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SCALE

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REV

st ] 1 1 1 1 1 [ 1 [ |
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“THIS DRAWING AND SPECIFICATIO
HEREIN, ARE
NS,
THE
PROPERTY OF DIGITAL BQUIPMENT CORPORATION AND
SHALL NOT SE REPRODUCSED OR COPIID OR USED IN WMOLE
OR IN PART AS THE BASIS FOR THE MANUFACTURE OR SALE

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REVISIONS

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CHANGENO.

|Rev.
|
TITLE

LSTREF BOOTCABLE CONN

:
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|
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TITLE

SIZEJCODE

LSIREFBOOTCABLE CONN
SCALE —/—r
[sHeEET 5 OF s

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[
L] [

[

NUMBER

ANV

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L
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oWWINGANDS?ECIFICATlm HEREIN, ARE THE

r.‘é%@&{“g%‘m%'fi":.:g@#‘
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COPRGT©

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)

DGTAL EXPMENT CORPORATION”

7
N?TES

|
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27627 EJ9]
2

3
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ASSERTION

1) JUMPER REMOVED EQUALS

ON.

2} REFERENCE DESISNSTIONS C2-C5AND
E2—ES

ARE

USED,

REF

ASSY/DRILLING HOLE LAYOUT

JUMPERS

30 AWGE

ARE

€

IMPLEMENTED

REF

MODULE ECO

WIRE-WRAF W/RE.

K-CO-M7946-8-4

X-Y COORDINATE HOLE LOCATION

ETCHED

HiSTORY

CIRCUIT

BOARD

SEE THE

;ggzg HAMOBSOOK FOR RECOMMENDED

4
3
26

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[R2,R4,R6,R8,R10,R12,R27,
R29,R31

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RX@1-BC

1975

RX#1-BA

AND SHALL

IN PART AS THE BASIS FOR THE MANUFACTURE OR SALE
OF

THIS IS PRINT SET 0T

RX@1-AD

@ <o VOjw|w|T

THE PROPERTY OF DIGITAL EQUIPMENT CORPORATION

60HZ

FOR KC780 LOW V,50H7Z

FOR KC780 HIGH V,50HZ

TITLE
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CODE
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FLOPPY

DISK

NUMBER
RXP1 -4
ol

DRIVE

REV

RX@1 DISK DRIVE ASSY

CHASSIS W/HINGE

RX#1 BEZEL ASSY

D-IA-7010679-0~0

B-DD-RX01-0

C-PL-RX0 Eogofl
E-UA-

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PLATE, FRONT,
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D-IA-7413002-0-0
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CONTROL
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PACKAGING INSTRUCTIONS
RXO! INTERPLANT
A-SP-3700185-@-@

PACKAGING INSTRUCTIONS
RX0OI CUSTOMER
A-SP-3700193-@-&
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B-DD-H771~-§

D-AD-7010721-0-0

D-IA=-7412853=-0-0

D=-CS=-M7727=8-1

D-CS-M7726-@-1

PACKAGING INSTRUCTION
RX@! INTERPLANT

W/O BEZEL ASSY
A-SP-3700185-|

FLEXIBLE DISK DRIVE

B-DD-7013077-0

FLEXIBLE DISK DRIVE
B-DD-7014300-0

UM/FAN ASSY
PLEN
(OLD STYLE)

FLEXIBLE DISK DRIVE

B-DD-13503-0

A-PS-3012304-0-0

"rms

DRB 107

DEC 16—(325)—1062—3—N871

RX@1 FLOPPY DISK DRIVE

AN ASSY
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NUMBER

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MECHANICAL

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L!V SHT

E-UA-RX#1-g-F

Jrue

OESCRIPTION

RX#1 FLOPPY DISK DRIVE ASSY (PI)

E-IA-7412666-0-0

| COVER,

TOP

D-IA-7010646=0-0

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D-UA-BCASL-P-f

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EXTENSION ,m;

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| CABLE, KEYRCARD
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HARNESS,

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D-AD-7010721-0-0

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CHASSIS W/HINGE

[

A-PS-3612317-0-0

[

D-IA-7413002-0-0

C-SS-7413002-0-1

[

FLEXIBLE DISK DRIVE

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LOGO, RX#1

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[

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16/B-DD-7015622-0-0

D-IA-5011370-0-0

D-CS-M7726-f-1

X = PRINT OF DOCUMENT INCLUDED

C = INCLUDES ALL PRINTS INDICATED ON DOCUMENT

CODES

DRB

N PRINT SET

| s — CONFIDENTIAL AUTHORIZED SIGNATURE REQUIRED

108

OEC 16-(329)-1062-20-RAT2

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| ACCEPTANCE

TEST

1A-PS-9905729-0-0

PROCEDURE

PACKAGING
REG'ULAR

INST. INTERPLANT
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ONE PIECE

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SCORED

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TAPE

,
110

3 | FLEXIBLE DISK DRIVE
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PRINT SET

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1A-PS-9905713-0-0

CUSTOMER

CARTON

| D-CS-M7727-8-1

A-PS-9905711-0-0

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2 |PLENUM/FAN ASSY

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1A-PS-9905712-0-0

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PLENUM/FAN ASSY (OLD STYLE)

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A-PS-9905713-0-0

9 |A-SP-3700185-0-0

REGULAR

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A-PS-9905710-0-0

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PACK INSTR W’0

LAMINATED BUILDUP

¥ | 3 | H771 POWER SUPPLY

C-MD-7413350-0-0

B-DD-H771-8

34 | RX@| ENGINEERING SPECIFICATION
RXZ! FIRMWARE LISTING

A-PS -9905729-0-0

DATE

1 | SHIPPING BRACKET

A-PS-9905712-0-0

FRONT, SINGLE DRIVE

SILK SCREE)N,SINGLE DRIVE

DESCRIPTION

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A-PS-9905183

0./ FLe

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D-IA-7010679-0-0

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12|A SP-3700185-1

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K-SP-RXBI-0-2

VOLTAGE VARIATION

LEV SHT

PRESSURE

1 | PANEL,

ORAWING NO.

| | BRACKET.SHIPPING Rxdl

C-MD-5509081-0-0
-

DATE l

RX@1 FLOPPY DISK DRIVE ASSY

B-PL-RX#1-g-@

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1A-SP-3700193-0-0

PACKAGING

A-PS-9905741-0-0

FULL

A-PS-9905740-0-0

FOAM

A-PS-9905739-0-0
A=PS-9905734-0-0

LAMINATED BUILDUP
PLASTIC STRAPPING

INST.

TELESCOPE

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CAP

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NEW STYLE
TITLE
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RX@l FLOPRY DISK DRIVE
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| 0013

SIZEXCODE

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NOTES:.

PROPERTY OF DIGITAL EQUIPMENT CORPORATION AND SHALL

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FART A5 746 BASIS FOR THE MANUFACTURE OR SALE OF

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NUMBER

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[pEs|M7726—0-1 | J
ost.| [ | [ T | [ | ]

|[[T] -3z Ea] 2 |

*THIS DRAWING AND SPRCIPICATIONS, MNEREIN,

PROPERTY OF DIMTAL BQUIPMENT CORPORA'
SHALL NOT M MPRCDUCID OR COPED OR UBID N
OR I PART AS THE BASH TOR THE MANUFACTURE
OR

OF ITews

WRITTEN PERMION.

THIS LIST GIVES THE SOURCE AND DESTINATIONS OF SIGNAL NANES

WITNIN THE M7726 PRINT SET.

SIGNAL NAMES THAT DO NOT APPEAR ON THIS

LIST ARE PRESENT FOR INFORMATION ONLY.
TO OTHER POINTS IN THE PRINT SET.

INTERFACE

REFERS TO SIGHNALS ON THE INTERFACE BUSS

POWER SUPPLY

REFERS TO VOLTAGES FROM THE POWEN SUPPLY

DRIVE

THEY DO NOT INDICATE CONNECTIONS

REFERS TO SIGNALS DN THE DRIVE BOSS

REFERS TO SIGNALS ON J3 THE MAINTANENCE CONNECTOR

0Bl (1) M

DS=D4¢

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DESTINATION

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D3=C6,03=82,D7-88
DS5=D6,D07=88,D0-D4,D0-B4

RX INIT L
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SEL 3 (1) W

D3=Bé

DS5=CN,D6=C8,D0=86,KN11{

DRIVE

SEP DATA (1) H

DRY BUSS ¥
DRVOUT H

DRV LOAD HEAD
W

DRY STEF L

DRY INIT ¢ PC

- DRV ABOVE TK 43 H

DS-b4¢

pS=C1
DS=Al

pS~C1

De-Bé

DS=-81

ne-A4

DRIVE

D4=B4

Dé=nS

D3=A2

ODRIVE

SR LOAD H

D381

D3=C4

D4=Ad
DRIVE
DS=Al
DS=B1
DRIVE

DRY SEL WT PROT L

DRIVE

D8-CO

END WIND L
ERROR MLYT ENASLE L

D4=p)
KM1)

SR MSB (1) M
SYN INDEX (1) M

DS=B4

p3-D3
DS=AS

De=Cé

D4=AZ,DT=A8,D8=CS

SR H

DS<C¥,D6=CH,D8=86,KN11

D4<BS

DRIVE

;

DS5=C4,D8=-86

SEP DATA (1) L

DRIVE
DS-B1
DRIVE
DRIVE
D581

DS=C!

Di=Be

:
!

INTERFACE

DRIVE

DRY RAW DATA L
DRY SEL DK | M
DRV SEL INDX ¥
DRV SEL TRK 0 H
DRY WT DATA

DRY WT GATE W

SFL 2 (1) W

SEP CLK (1) W

D4~C1

INTERFACE

08-DS
TEST PAD
De-Bd

03-D8

DATA
I L
DISABLE ROMS L
DO INST L

SEC BUF OUT (1)

03-Ct

D3=C7,03=A2,04=81,05B4,07=88

DI=Ab

DS=D1

D3=C8

D3=A6

co (1) L

RX ERROR L

pi-c8

D3-B4

KM11
D781
D7=Al
D3=A6
DI=Aé
D3=Ab

€O (1) H

DS=C?

ROM OUT 1

DS=7

CONTIN L
CRC16 (1) W
CRrRC1® (1)
€1 (1) AM
€1 (1) H
c1 (M L

KM11
KMi1

ORIGIN
)

D8-D1

XMi1

XMit

SIGNAL NAME
CLK CRC L
-

D708

D3=C4

DS=Cé

DS5=C4,DE=CE,DR=C6
D8=C6

DRIVE
D4=D8
D7-C?

e
1
]
P—

ruc'u) ]

Dé=D6

FLO J L

FLD 4 L

Dé=Dé

FLD 5 L

D6=Dé
De=Dé

De=BS,Db=B4

MALT W

D7=C3

HIGN 1

D7=C4&

MIGH 2
NIGN 3

071-Cé

TPe L

D7-D3

De=-B2

D&=C6,D8=C4

WAR CLK CNTR L

De=C2

D3-p7

KM11

20 MHZ CLX

D7CS

D4=CS,D4=D7

D7-p4

D4=AS,D5=87,05=A7,05+84,07=DS

De=A?

Kmi1

D784

D4=D8,D4~C8,04+D7,04DS,

DO=A4

DI=né

D4=81,05-D%,Db=A8

D:—D:-DT-C‘.D'I-C!.D.-DS.DI-IJ
Do~A

::fis

D8-CS
DA=BS
D7+80

LD WA+ CLK PC L

DA=C1

DheAN,DI=AR

LD SCRATCH PAD L

Dh=ne

ni=n}

TEST PAD

o8-l

DA=C4
D)«C?
03+C7
D3=C?
03=C7
D3=C?

D8-CS
Dé=AS
DéeAD
Db=AS
Dé=-ss
Dé-88

D)-p7
p3=0?

Dé=no
Db~

pep?

D1<A4,DB=AT

zU)

De=BS

P;-Q"
S
e

B
—

Dh=CH

MAINT DIS L

nyx OUT S

DO=nS

Ds-81
psepl
D304

WUX OUT
nux ovt 7

KN11,D0-85

INST DIS W ~
INST DIS L
INTERF BUSS M

N1s CLK (1) L
wux OUT ©
nox.- OUT 1
mX OUY 2 . WUX OUT 3
XJX OUT 4

PONER SUPPLY

D4=D5,D4=CS,D7=D4

o;-a:

Da=C3

POMER SUPPLY

D8~Cé

D4=3),D5=85,06=A0

Dl=26

*«10V

G,2
2

D3=C6,DI=84,03=A4,DI=AT7,D4=DS

DE-A4
Dl

+5V

«pd,D8=
.,,:S.'”
84.08-c3
D8=~C3

DieAd

INST 0 (1) M

Juip 1§,

07=D3
D7=D2

PONER SUPPLY

INIT ¢ PC M

(1) R

D702

Dé=AS,D6=A4

TM®wIiL
P4 H

GND

De=AS

T 1 (D L.

]I N

DJ=D6,03=~04,D03=C6,03>C4,D4=A)

INIT +PC A L

INST 0 (1) L

D6=B1,06~-82
D6=L),D8=C2
D7=C?

05-82

INST 1

0é=A3,06~A2

KMy

NOME M

INIT ¢ PC L

D6=D6
Dé-Dé

LT Y

FLD
1 LL
FLD 2 L
MALT L

D3=8)

FLD

De=-ns

ARVINONS

cavess n0.

ey,

e CONTRO
FLOPRY LLER
DISK
—/————f

SCALE

|gHEET O

TiZE

oF
9

NUMBER

DICS| M7726-&-I
osv. |

[

REV.

Vo]

This drawing and specifications, herein, are the property of Digital Equipment Corporation and shail not be
reproduced or copied or used in whole or in part as
hout
the basis for the manufacture or sale of item
written permission. COPYRIGHT

1976

R TPXY

] 2 |

]

DESCRIPTION

CART NO.

DIGITAL EQUIR CORR

FIRST USED ON OPTION MODEL T

R X¢|

CHK'D}_"‘%&'}?’ N

DATE

-4

PARTS LIST

]

mn@naneoummshn

‘L

MAYNARD, MASSACHUSETTS

CORPORATION

PR TLE

\' 7'f‘f’'DZII\/T/E?/M
>
o
P72 FLOPPY CONTROLLER

DATE

LGS

FIRMWARE

INEXT HIGHER ASSEMBLY

SCALE

DRM

iLthf

SHEET

SIZE[CODE

NUMBER

KI|SP|RXQl —@ —2
DIST.

REV.

TLOPPY

CONTROLLER

BDONOCVEWN-

/RX31

FIRMWARE

/RXG1

FLOPPY

PALLD

CONTROLLER

vViaza

9«FEB=TH

9:17

PAGE

FIRMWARE

/THIS SYMBOL TABLE REPLACES THE NORMAL ®AL SYMBOL TABLE AND DEFINES
/THE INSTRUCTIONS POSSIBLE BY THE RXPt CONTROLLER

10
/00 INSTRUCTJIONS

pooe
eoeo
evoe
2000

SETs2

CLR=?

ONE=2
ZEROs=2

20002
good
oc1e
ee1d
eo2e
Qveu
22330

1082810
1083s14
10B84s20
1085824
1086830

peeo
opgee

INTERFsCLR ]0B@
DISK=SET 10B@

eeay
ee10
2014
epee
eeady
R
T")

ERR=10B1

OONE=IOBY
SHIFT=IOBS
SECDAT=10Bé6

2204

WGATE=1I0B1

10Bg=o

/INTERFACE=~DISK BUSS OUTPUT BUFFER

J0B1s4

/1080 SELECTS

EITHER

/8ETEDISK

INTERFACE OR DISK BUSS,

CLR=

/INTERFACE BUFFER DEFINITIONS
/SET TO INDICAYE THAT AN RX@3 ERROR HAS OCCURED
/8ET TO0 REQUEST AN RX@1 WORD TRANGFER

XREQG=I0B2

100UT=1083

/DIRECTICN FOR DATA LINE,
SETsSTO INTERFACE
/8ET TO INDICATE RXD1 READYNESS TO ACCEPY A COMMAND

/SHIFT

FOR DATA LINE

/8ELECTS SOURCE FOR
/SET3SECTOR BUFFER

DATA OUT OF CONTROLLER ON DATA LINE
CLR=SHIFT REGISTER MOST 816 BIY

/DISK BUFFER DEFINITIONS
/WRITE CURRET EMABLE WHEN SET
/HEAD STEP,
TwWN PULSES REQUIRED
/DIRECTION OF HEAD MOTION
/ERASE CURRENT ENABLE

2810

STPHDslOBE

gety
goee
geed

HOOUT=I0B3

EGATE=1084
LOWCUR=IOBS

/SPECIFIES

Jde3d

UNITE3Y

/SELECTS

284

UNHD=
4

dude

LOHD=42

/DEACTIVATES HEAD LOAD SOLONOID OF SELECTED DRIVE
/ACTIVATES HEAD LOAD SOLONOID OF SELECTED DRIVE

@044
eeal
Qeeo

BAR=44
LONG=]
SHORT=0
INCRs2

Qoee

INTERFACE

WRITE

ONE

CURRENT
TWO

FOR

EACH TRACK

LEVEL

DRIVES,

UNIT

(ZERO)(ONE)

/SECTOR BUFFER ADDRESS REGISTER CONTROL
/FORMATS
CLR BAR (SHORT)(LONG)
/SHORT PRESETS FOR COUNT QOF 10224

/LONG PRESETS

FOR

INCR

CQUNT

RAR

4B96

INCREMENT

THE

BUFFER

9117

PAGE

tel

ADDRESS

REG,

‘nf

/FORMATS

/RX@B1

FLOPPY

CONTROLLER

FIRMWARE

S6
57
58
59

2us50
2003
geoee

WRTBUF =S8

62
61
62

eesSy

CRCe=54

/CRC REGISTER
/FORMATT
CRC

PRECRC=S7
DATCRC=YS

/BE JAMMED INTO CRC GENERATOR/CHECKER
/PRESETS CRC REG TO ALL ONES
/SHIFTS SEPERATED DATA INTO CRC CIRCUIT

FLAG=6D

/GENERAL PURPNSE FLAG CONTROL
/FORMATS
FLAG (ON)(OFF)(TOG)
/SET FLAG

63
64
65

ees7
0ess

START=3
FIN=D

66
67

geee
gcae
eeot
2003

ON=2

OFF=1
T0G=3

PAL1O

Vi42A

9=FEB=76

/SECTOR

BUFFER

/FORMATE
/A

TSBNS

WRITE

CLOCK

(STRAT)(FIN)

MINIYUM PULSE

WRTBUF
IS

REQUIRED

CNANTROL
(NNE)(ZERO)

SPECIFIES

DATA

/CLR FLAG
/TOGGLE FLAG

2064

LSP=64

/LOAD OPEN SCRATCHPAD REG WITH CONTENTS OF SHIFT REG

2070
egrl

LCT=T70

/LOAD
/LOAD

COUNTER
COUNTER

WITH CONTENTS
WITH CONTENTS

eer3

ESPe7
1CT=73

/INCREMENT COUNTER

eev4

ROTATE=74

/8HIFT REGISTER CONTROL
/FORMATS ROTATECONE) CZERO)

OF
OF

NEXT ROM LOCATION
OPEN SCRATCHPAD

/SHIFTS BHIFT REG TOWARDS MOST SICNIFICANT BIT
/WHILE INSERTING A ONE OR ZERO INTO THE LEAST

. 8875

eor?

'4’

LSR=7S

DATSR=77

/SIGNIFICANT BIY

/L0AD

SHIFT REGISTER

/DATA

INTO LS®

WITH CONTENTS

OF CCUNTER

/SHIFT REG TOWARDS MSB WHILE INGCRTING SEPCRATED

/RXBY

FLOPPY

87
88
89
90
91
92

93
94
95

CONTROLLER

FIRMWARE

/BRANCH

oiee

Videa

INSTRUCTIONS

s
oa
g
e
-

B - OO
N
PR RQO®D®~SO

o
e

Pt Pm

et Pt

NV 08—

Lld

- pa

2302

/1F
/18

WBR=300

/FORMATS

133
134
135
136
137
138
139
140
141

142
143

geen
goee

FBZEROD

ool

IND=1

ovee

Qga4

I0B30T=4
DATAIN=10
INDXx=14
SR7a320
COFL=24

ve10

2014

geee
@024
0238
P34

HOME=34

epue
Q244
2252

SEPCLK=44
XI1IBlT=59

/SEPERATED
/OVERFLOW

RATHER

THAN

FROM

DATA

EQUAL

CONMPITION

SHIFT

(ALL

FLAGO=sT4

/STATE

CONTROLLER

FIRMWNARE

vide2a

9=FEB=76

0200

OPENs200

egce
geaa
enta

RESO
Ri=4

2pa0
ecou

pete

ROM

LOCATION

GENERAL

PURPOSE

BIT

THE

SECTOR

REG

BIT

BUFFER

FLAG

9317

PAGE 3

SELECTION

/FCRMATS QPEN X
WHERE X 18
/THIS INSTRUCTINN MAKES THE
/ACCESSABLE

VYA

/JDEFINITIONS

THE

LSP

AND

SCRATCHPADS

ONE OF THE SCRATCHPAD
NAMED SCRATCHPAD
ESP

COMMANDS

RS=24
R7=34

RO=4y

R12e52

Ri1=54
Ri2=60
Ri3=64
R14=702

R15=74

CURTKQRuRO

CURTKi=R]
ERREG=R2

eo14
eecee

STAT=R3

n024
0230
0634

TARSEC=RS

Qeue
a4y

TEMPC=RS

pase
2054

THE

Re=1€

Re=40

Qere
274

INSTRUCTION,

TAKEN FROM THE

REG

ONES)

2eT4d

MCEQSR=64

Coug
2044
2es5¢
f2S4
eaep
¢de6d

174

SCRATCHPAD

BDATAO=T7D

/SCRATCHPAD

FALSE

TO BE

gaed
2970

R6539

167
168
169
172
174
172
173

THE BPANCH ADDRESS

/ADDRESS REGISTER
/MISSING CLOCK FQUAL TO SHIFT
/0UTPUT OF SECTNR BUFFER

gol0
en3u

165
166

TO BE

/SEPERATED CLOCK FROM DISK DATA
/ASSERTED IF "NTERFACE TRANSFERS ARE TO BE
/12 BIT WORDS RATHER THAN 8 BIT BYTES

DEQGSR7=54
BAROFL=60

166

163
164

CONDITION

/OVERFLOW (ALL ONES) OF THE COUNTER
/BIT 16 OF CRC GENERATOR/CHECKER
/TRACK ZERO OF SELECTED ORIVE ANDED WITH HEAD
/DIRECTION REING QUTY
/WRITE ENABLEN STATUS OF THE SELECTED DRIVE

WRTEN=UD

R3iz14

1602
161
162

THE

/WHEN ASSERTED INDICATES THAT THE INTERFACE MAS
/SERVICED A TRANSFER REQUEST, OR THAT A COMMAND
/1S PENDING
/INTERF/DISK OUTPUT BUFFER BIV 3
/BIDIRECTIONAL NATA LINE BETWEEN INTERFACE AND CONTROLLER
/DRIVE INDEX LATCH
'
/SHIFT REGISTER MOST SIGNIFICANT BIT

CRCib6s30

Ru=20

150
191
1%2
153
154
158
156
157
158
199

(T)(ONE)

INCREMENTED WITH EVERY EXECUTION OF

/REGUIRES THE CONDITION TO BE YRUE
/1F APPENDED TO THE JUMP, BR OR WDBR

/O0PEN
RUN=0Q

geed
Peed

149

/REQUIRES

/CAUSES

144
105

148

COND

/THE BRANCH I8 MADE,
IF THE COUNTER OVCRFLOWS
/THE BRANCH ADDRESS IS IGNORED AND THE NEXT INSTRUCTION
/1S EXECUTED

TaONE

2o1d

147

WBR

COUNTER

THE NEXT ROM LOCATION
INSTRUCTION IS EXECUTED

/THIS INSTRUCTINN,
THE WBR I8 REPEATEODLY
/JEXECUTED UNTILL EITHER THE COUNTER OVERFLOWS OR
/THE CONDITION 18 MET,
IF THE CONDITION IO KEY

pas4

FLOPPY

THE BRANCH ADORESS

THE CONDITION I8 NOT MET,
IGNORED AND THE FOLLOWING

/THE

Qven

‘RXQ1

PACE

AND CONDITIONS

/NEXT ROM LOCATION AS

100
101
je2
103
104
105

[ IR W

9517

/FORMATY
BR COND (T)(F)(ONE)(ZERO)
/IF CONDITION IS MET,
A BRANCH IS MADE WITHIN
/THE CURRENT FIELD USING THE CONTENTS OF THE

BRu100

97
98
99

9«FEB=76

TARTRK=RY

TEMPAZRS
TEMPB=R?
TEMPD=R9

TEMPE=RIQ

TEMPFeR11

2060

TEMPG=RL2

poe4
2070
gord

RTYNBER13

RYNA=SR14
RTNaR1S

/DEFINIVION OF
/CURRENT TRACK

SCRATCHPADS BY PNEUMONICS
ADDRESS OF DRIVE 0O

/CURRENT TRACK ADDRESS
/DEFINITIVE ERROR CODE

/STATUS
/TARGET

/TARGET

OF
IF

WORD NF RXQ1
TRACK OF CURRENT

SECTOR

OF CURRENT

/TEMPORARY

STORAGE

/TEMPORARY

STNDRAGE

/TEMPORARY STORAGE
/BIT 7 IS UNIT SELECT

DRIVE
ANY

DISK

BIT,
©
/BIT 7 1S HEAD LOADED BIT,
§
/TEMPORARY STORAGE
/TEMPORARY STORAGE
/RETURN ADDRESS FOR 3RD LEVEL

/RETURN ADDRESS
/RETURN ADDRESS

FOR
FOR

ACCESS

MEANS
MEANS

NESTED

UNIT
HEAD

LOADED

SUBROUTINES

2ND LEVEL NESTED SUBROUTINES
1ST LEVEL SUBROUTINES

REG

/RXP1 FLOPPY CONTROLLER FIRMWARE

9317

GeFtBe76

VideaA

PAGE 4

/JUMP INSTRUCTION AND JUMP FIELD DEFIMITIONS

175

176
177

J20e

eea?d

F2s?

185

dded

Fi=sd

JUMD EX

/FORMATS

JuMPs22e

178
179
i8e
18}
182
183
184

(IND)

JCAUSES A BRANCH 10 ONE OF SIxXx ROM FIELDS (0=5)FROM

/SPECIFIED 8Y X,

THE BRAMH ADDRESS IS TAKEN

/THE ROM LOCATIAN FOLLOWING THE JUMP INSTRUCYION,

/1F IND IS APPEMDED, THME BRANCH ADDRESS
/15 TAKEN FROY THE OPEN SCRATCH PAD

fvte

186

187
188
189

/RXB1

PAL1O

FLOPPY

F2=1e

duld

Fiz=1d

2020
prad

FSa2U

CONTROQLLER

Fus2n

FIRMWARE

PalLd

vidga

9=-FEB=T74&

9117

PAGE

192

191
192
193

194
195
196
197
198
199
2o
2l
ewne

283
224

/TABLE OF DEFINITIVE ERROR CODES
p21a

1@
KEXOVAS

deee
ee3v

KNXDV

ede
pesd

KeRONGS3Q

KERTRK=242

2
KHOMERRSS

225
226
247
278
2e9
212
21l

234

KSELFER=62

2ere

KNXrDR=T@

g102
arie

KuPROT=120

/DRIVE @ FAILED TO SEE HOME ON INITIALIZE
JDRIVE § FAILFD TO SEE HOME ON INITIALIZE,

/HOME WAS FOUND BEFORE DESIRED TRACK WAS REACHED
/SELF

DIAGNQOSTIC

ERR

/DESIRED SECTMR COULD NOT BE FOUND AFTER LOOKING
/AT

hEADERS

/WRITE FUNCTITN ATTEMPYED ON A WRITE PROTECTED DISK
/MORE THAN 4@ MICROSECONDS AND NO SEPCLOCK SEEN

KTIMERR=112
KNXPRAM=122

/A PREAMBLE COULD NOT BE FOUND

2130

KNXIDAMs13@

212

2140

KHCRCER=140

/CRC ERROk ON WHAT APPEARED TO BE A HEADER,

213
2ld
215

2159

KTKSKER=150

elee
2172
2200

KXSTRYS=160

nei2

KPARER=210

216
el7

218
219

2120

70
KNODAM=1

KDCRCER=2R20Q

DOES NOT CAUSE ERROR

/FOUND HOME WHEM STEPPING IN 10 TRACKS FOR INIT
/TRIEC TO ACCFSS A TRACK GREATER THAN 76

/PREAMBLE FOUND BUT NO ID MARK FOUND WITHIN ALLOWABLE TIME

ERROR IS NOT ASSERTED

/THE TRACK ADMRESS OF A GOOD HEADER DOES NOT COMPARE
/WITH THE
/700 MANY

CESIRFD TRACK
TRIFS FOR AN IDAM

/DATA AM NOT FO''ND IN ALLOTTED TIME

/CRC ERROR ON READING THE SECTOR FROM THE DISK
/PARITY ERROR 0% SOME WORD FROM THE INTERFACE

/RXBL

FLOPPY

CONTROLLER

PAL10O

FIRMWARE

/[ROUTINES INITIALIZE]

eee

PAGE 6

917

9=FEB=76

VigeA

IF A HOST PROCESSOR INITIALIZE CR AN

/JRXGY POWER LOW IS DETECTED, THE PC IS CLEARED AND THE RX21 TIMING
/STOPS, UPON THE NEGATION OF INITIALIZE, TIMING RESUMES AND A SELF TEST OF
IF AN FRROR OCCURS HERE, ERROR AND
/INTERNAL DATA PATHS IS MADE,

22l
2ee
eel
eed
22s
226
ee?
228
229

/DONE ARE SET, BUT ERREG IS NOT ALTERED, THEN IF NO ERROR HAS OCCURRED AN ATTEMPY
/15 MADE 10 RECALABRATE ORIVE § THEN PRIVE @, IF DRIVE @ FAILS TO RECALIBRATE,
/THE ERROR CODE I8 LOADED INTO ERREG AND ERROR IS SET, 1IF DRIVE
/@ RECALIBRATES AND IS READY (DISK LOADED) SECTOR ONE OF TRACK ONE
IT 18 POSSIBLE FOR A READ ERROR
/1S READ INTO THE SECTOR BUFFER,
/TO OCCUR WHILE READING THIS SECTOR,

ele
23l

23e
233
234
235
236
237
238
239

oeen

OPEN
LSP

ERREG

/CLEAR ERROR REGISTER

ge2e
2352

JUMP

/GO DO THE INITIALIZE DIAGNOSTIC ROUTINE

2023

TEST

poa4

2070

noes

aeed

P06

ge7s
gel14

DECIMAL
LSR
OPEN STAT
LSP

2%0e

24as
ehé

oea?
peia

247

248
249
250
es1
ese
253
254
25%
256

257

nell

eele
g213
eotid
1B}
ga1é6
eel7
goee
veel

258

259

DECIMAL

e210
po6d

2oev

epel

249
2Aal
ede
243
24d

*2200

ppee

TSTRTN,

/RETURN FROM SUCCESSFUL ODIAGNOSTIC ROUTINE

LCT
OCTAL

Q064

/SET UP SOME 3CRATCHPAD REGISTERS

peve
2377
paTs
Ae4d
64
2200
Aoe6d
peod
go6d

LCT
-l
LSR
OPEN
LSP

274

ROTATE

peek
aa6d

L8P

OPEN
LSP
OPEN
LSP

TEMPD

/JUNIT @ TO SOFT UNIT BIT

CURTK®

/NEG ZERO TO ROTH CURRENT TRACK ADDRESSES

CURTK!

OPEN

ZERO

prel3

261

@224
0025
g2a6

220
paod

DPEN

pee7

ooee

DISK

Po3¢
@f3l
po3e
@233

gere
an34

RECALY

¢zee

JUMP

pe3dq

236

RECALL,

UNIT

ONE

AL3S

na14

RECALD,

CLR

HDOUT

CONTROLLER

FIRMWARE

265
266

267
268
269
ele
ert
272
er3
2nd

/RX@1

FLOPPY

275
276
er?

278
279
289
8l
282

283
eddy
285
286
287
288

289
290
291
292

293
2%4

295
296
297
298
299
399
381
3ee
323
34
325
326
307

2e3e
pa37
2240
po41
aoue
2043
pady

Q@045
gede

z2o47
2e50
gRsS1
Qus5e

TARTRK

/170

RUSS

ALLOW

POWER

TO LOAD HEAD AND WAIT 25 M8

DRIVE

TIME

SETTLE

pLY25

2670

LCT

2365

{f=1
LSR
LCT
IN1Q
JUMP F4
STEPHD

pR7S
ee7e
2e4s
ge2e
2109

INt G,

JUMP

UNIT

/STEP HEAD IN

vidzaa

FOR

RECALIBRATE

IS NOT BEHIND TRACK 2

17 TRACKS TO ASSURE IT

9=FEBe76

/ERROR,

FS§

ONF

HOME

WAS

93117

SEEN

PAGE 6=~1

WHILE STEPPING

IN,

WRONG

SET

gelé
garTe
0257
8975

/SELECT

PALlQ

/STEP OUT

HDOUT

AS MANY

AS 80 TRACKS

IN SEARCH OF HOME

LeT
-80~1

LSR
LCT

P53
0254
2055
gase
P57

2670

2060
neel

paee

eR75

WHCHDR

eo62
poe63

2174
ee7e

po64

o270

2065
PB66
oees7

eete
geeé
2610

2279

eo7e
eeeo

apee

RCALOK

pede
gaee

UNHD
JUMP F4
STEPHD

cioe
RCALOK,

JUMP

/HOME

FLAGO

wWAS

FOUND OK

/1F FLAG=@ RECALIBRATE

WAS ON DRIVE

NXDRV1

NXDRVQ,

NXDRVY,

/RECALABRATE FAILURE WAS ON DRY @

LCT.
KNXDVO
JUMP FS
GOERDN

/RECAL FAILURE

LCT

LSR

p21o
peéed

LSP

313

pe7s
2076

176
2372

0e77

BRe6e

FLAG

ploe

ou34

UNIT

ZERO

010}

02p2

JUMP

2035

RECALQ

OPEN

WHCHDR,

WAS ON DRV

/AND CONTINUE RECALIBRATION

KNXDV]

2R7S

p1ee

INITIALIZE BOOTSTRAP

F4§

pe7re
P73
2074

315
316
317
318
319
320
321

DISK

/CALL SUBROUTINE

Ler

po71

314

SECTOR

/NEG ONE TO TARGET TRACK FOR
/SELECT

308
329
310

31
312

TARGET

LSP

2145

peae
262l

ONE

/NEG

TARSEC

262
262
263
264

INIT DNNE BIT OF STAT

/SET THE

LOG ERROR

ERREG

BR FLAGO
PONRCL

/1F FLAGs] BOTH DRIVES HAVE BEEN RECALIBRATED

/SET FLAG TO INDICATE DRV © 1S BEING RECALIBRATED

/G0 BACK AND PECALIBRATE DRV®

/RX@1

FLOPPY

CONTROLLER

322
323
324
325
326
327
328
329
330

PALLD

9117

PAGE

/THE TRACK ADDRESS IS LEGAL (NOT GREATER THAN 114 OCTAL,), MOVES THE
/HEAD OF THE SELECTED DRIVE TO THE SPECIFIED TRACK, VERIFIES
POSITION, AND LOCATES THE CORRECT SECTOR, EXIT FROM
/TH1S SUBROUTINE OCCURS AT WRITE TURM ON TIME OF THE SELECTED,
/SECTOR, ENTRANCE IS5 MADE WITH THE RETURN ADDRESS IN THE COUNTER

/TRACK

FINDTR,

2103
nio4

Re7S
0274

2105

aRe6d

LSP

LSR

OPEN

2106

aere

e1a7

LCT

npee

piie
211l

2a71s

LSR

eite

Re1e
eee6d

LSP

345
346
347
348
349

2113
2114
2115

0244
ee7y
2ers

/SAVE

RTN

THE

/CLEAR

OPEN

RETURM

ADDRESS

THE ERROR REGISTER

ERREG

TEMPD

/SOFT

UNIT

BIT

TO SR

eESP

LSR

gi2e

ise

117

a127

UZERO

151
3Se
353

s12e
2121

R174
e141

elee

eeldq

o123

ee7To

LCy

pl1e4

2200

200

354
355
356
3157
3158
359

=FEB=T6

/THIS SUBROUTINE 1S USED TO LOCATE A SPECIFIED SECTOR, IT PICKS
/UP THE TRACK AND SECTOR ADDRESS FROM THE INTERFACE, CHECKS THAT

Jae
34y
342
343

344

Vid2A

FINDTRACK]

/[(SUBROUTINE

31%
332
333

334
138
336
337
138
31319

FIRMWARE

UONE,

SR7

ONE

BR FLAGO
USAME
UNIT

ZERO

/1F

SR=1

/1F

FLAG=O DRIVE

/ORIVE

ZERO

DRIVE @

IS
|

CURRENTLY SELECTED

DESIRED

AND

18 DESIRED AND DRIVEY

/SET

SOFT

/60

STORE

/IF

FLAG=1

UNIT

SELECT

ALREADY

SELECTED

WAS SELECTED,

DRIVE

SELECT

oCTal

DECIMAL

360
364

362
363
364

212%
At1ee

geee
BL3d

365
366
367
368
369
372
37
372
373

2127
2130

P14y

FLAGO
USAME

131
p132

2p3e

UNIT

eove

LCcT

2133

beoe

374

2134
e13s5

275
coed

376

2136

Guv4d

2176

JUMP

UZERO,

UDIF,

175

/RX@Y

FLOPPY

CONTROLLER

377
378
379
3180
381
382
383
184
188

2137

025e

grae

goed

2141
gr42
2143
2144

Q78

388

145
vide
2147
2150
2151
eg1s52
2153
@154
2155

ea7o
2370

387
388
389

390
391
392
3193
3194
39S
3196
397

FIRMWARE

PALLOQ

OPEN

LSP

UNIT

BIT

/CLR

DRIVE

DESTRED

SOFT

UNTIT

SOFT

Videaa

UMIT

DESIRED

BUT

DRIVE®

SELECT

BIT

SELECT

1.0AD

AND

BIT

ALREADY

SELECTED,

DRIVE

LcT

PUTSEC,

LCcT
7=l
ROTATE

2876

g1ee
21ed
er73
e12e

BECAUSE

9=FEB=76

UNITS

9117

CHANGED

PAGE 7w}

/CALL

GETWORD

/MAKE

FIRST

S''/BROUTINE

FOR

THE

SECTOR

ADDRESS

o147

BIT

COMPLIMENTED SECTOR

ADDRESS

ONE

COFL

ICT
SR7

4pe

162
163

4913

2164

aguy

g165

geve
B166
@z2ee
eeae

JUMP

ZERC

peed

TARSEC

/PUT

THE

TARGET

SECTOR

AWAY

LCY
PUTTRK

/CALL GETWRD SURROUTINE FOR TRACK ADDRESS

JUMP F4
GETWRD

1%
1

ule

q12
413

0e2e
2864

LSP

p170
ei17
eire
2173

2254
2o6d

OPEN
LSP

p260

OPEN TEMPG
LCT
=77}
LSR
LSP

2174

4is

2175

416
4117
418

419
420

ael

aee
423
424
425
426

az27

428
a29
430
433

PUTTRK,

2166
PLe7

Gid

2176

eere
vaee
0a7s
0264

2070
177
0eeo
0206
2e?y
Q75
0202 0270
2203
06U
e2es
0226
cliae
2205

2206

@207
el
2Ll

veee
gede
peoe
22he

BIT

400

411

ORIVE

JUMP F4
GETWRD

QPEN
LSP

4pé6
427
408
ae9

SELECT

PUTSEC

@145
geae
2eee

0224

SELECTED

TEMPE

o160
0161

399

8457

ZEROQ

/STORE

LSR
LSP

ROTATE

398

/DRIVE
/SET

ROTATE

USAME,

ONE

eoT4
eeee
2150

aL156

SOFT

UDIF

OPEN

TARTRK

/STASH THE

TEMPF

/START SETUP FOR COMPARING THE
/TARGET TRACK AND TRACK 76

LCT
ILTRK
LSR
OPEN RTNA

TRACK

ADDRESS

/Fs TARGET TRACK

717

/CALL SUBR

MAGCOM TO SEE£

/18 GREATER THAN

{14 OCTAL,

TARGET

TRACK

T6 DECIMAL,

L§P
JUMP FS
MAGCOM

ILTRK,

JUMP F@
ERTRK
JUMP FO
ERTRK

/TARGET TRACK IS 77, ILLEGAL
/60, REPORT THE ERROR

/TARGET TRACK IS GREATER
/60, REPORT THE ERROR

ADDRESS

THAN 77

REGARDLESS

DATA

/RXDL

FLOPPY

CONTROLLER

FIRMWARE

PAL1IO

432
433
434
43%

eate
0213
r3%

ee74
2e7s

E§P
LSR

436
437
438
439
440
441
442

ne1s

0200

OPEN

gete

2002

OISk

0217
0220
peal

ei22
0222
pend4

OPEN

peae
eeesl
gee4
0ees

eevy
2e7s
pee6o

ESP
LSR
OPEN

443
444
445

446
447
448
449
459
451

452
453
454
455
456

4s7
458
459
460
461

226

gear
2230

22314
eele
0233
2234
p23s
pale
ees7
pe4e
0euy

va44

OPEN

TEMPD

CURTKO

SR7

ONE

CURTK{

peee

OPEN TARTRK
ESP
LSR
OPEN TEMPF
LSP
LCT
TRKEQ
LSR

gn7s

270
Po6U
e226
2420

TRACK

/PRESELECT

OK,

GET

THE

DRIVE

SFLECTED? BIT7=@
UNIT { SETUP

MEANS

UNIT

DISK

/WHICH UNIT
/ZERO, SKIP

PAGE

9117

7e2

BUSS.

/PASS

SELECTED

/PASS

TARGET

CURRENT

TRACK

UNIT

MAGCOM

ONE

SUBR

TEMPG

LspP

246

/TARGEY

/SELECT

nB6d

0v7s
Q254
2n64
eeve

9=FEB=7&

/SELECY FROM TEMPD

ea71

Vid2A

OPEN

RTNA

LSP
JUMP

TRACK

MAGCOM

/CALL SUBROUTINFE MAGCOM TO
/1S SAME AS CURRENT TRACK,

SUBROUTINE

SEE IF TARGET
F&TARGET,
GsCURRENT

MAGCOM

462
463

2e4de
0243

464
465

24dd

466

pe4s

“67
468
469

470
471
472
473
474
475

pedeé

geuy
eese
0251
@e5e

2070
nedo
n2aeé
e6io

ERTRK,

Fp357
2e7e

TRKEQ,

LCY
KERTRK
JUMP

JUMP

800T,

RTNA

/NOOP;

OPEN

RTNA

/NOOP

OPEN RTNA
LCT
STPOUT

LSR
LSP

ees?
226¢
pee6!

fady
2271
Pe7s

ESP
LSR

484

pas6e

485
486

224

OPEN

263

ei2ov

479
480
481

482

pere
2275
rers

OPEN

483

/RXx21

487

FLOPPY

CONTROLLER

ACCESS

TRACK

489
499

OPEN

peee

491

gee6?

eary

ESP

BOOT

/PRESELECT

ZERO

LESS

ACTUAL

THAN

UNIT

SELECT

UNIT

/SR7=@

MEANS

Vidz2a

9=FEB=76

UNTY

ea7s

SET

HDOUT

0273
gev4

Beee

JUMP
DIF

/GO

ee75
2276

geoe
e300

JUMP

Fo@

/TARGET TRACK IS LESS
/THE ACTUAL, MOVE OUT

2277

a1y

CLR

g3eo

230y

2070
2385

LCY

DUNSTP

/COMPLEMENT
/SHIFT REG,

S10
S11

0302

aed4o

UNHD

/UNLOAD HEAD REFORE

512

2303
23024

022e
2120

JUMP F4
STEPHD

/CALL

SUBROUTINE

eles
2326

ve2e
2456

JUMP

F§

/HOME

FOUND

2307
0310
o311
e3te
2313

o244
207}

TEMPD

/SOFT UNIT

TARTRK

/GET READY TO PASS
/CURRENT TRACK

537
s38
539

540
541

SR7

2462

STPOUT,

TARTRK

DUNSYP,

HOOUT

HOMERR
OPEN

ESP
LSR
OPEN
ESP

ea7s

peee

o871

/PASS

TARGET

/ASSUME

STEP

THE

/TARGET

TYRACK

TO DIF

SURROUTINE

IS GREATER

NEEDED

STEPS

IN NEEDED

STEPHD

BEFORE

BIY

LAST

STEP

TAKEN

TO SR7

TARGET

LSR
LSP

/UPDATE

0322
0323
g3e4
0325

2074
2875
2254

/HEAD

/PASS

IS SETTLEN DETERMINE
TARGET YO MAGCOM VIA

o064

OPEN TARTRK
ESpP
L8R
OPEN TEMPF
LSP

oere
0323

LCrY
=l4gey

/PASS

HDSETL,

THE STEPS

MOVING

ee7s
0064

TO CALCULATE

OF STEPS REQUIRED IS IN THE
SET UP RETURN FROM STPHD SUBR

n3eo
232y

0327
336

START

SUBR

CNTR

THAN ACTUAL,

OPEN

2326

ALSO

DIF

THAN
IS NECESSARY

geed

2229

FROM

PAGE T7=3

VIA

DIF

OPEN CURTK®
BR SRT ONE

0317

NEEDED

nuY

p2oe
g1e2e
e832e

2316

STEPS

RETURN

/PASS SELECTED CURRENT TRACK TO DIFF SUCR VIA SR

LSR

gele

S3o
531
S32
533
534
S35
536

CURTK®

ge7e

e314
0315

SET

48s
496

Seé
527
528
se9

RETURN

9317

OPEN
Ese

513
S14d
515
516
517
518
519
See
521§
522
523
524
525

ONE

neee
2e71

499
500
S84
502
sSp3
504
525
©ge
5e7?
Seé
529

76 DECIMAL

1§

Pevy

497
498

THAN

TRACK,

ACTUAL,

BIT

493
494

cere

GREATER

CURRENT

SUBROUTINE,

CURTK1

PALID

ues

/TARGET

/0F

THE

REMUTRED

TARGET

/SOFT

FIRMWARE

gase
gaoo

EQUALS

ARE

TEMPD

SR7

paed
7265%

49?2

/TARGET

/STEPS

OPEN

Boed

477
478

NOSTPS

@253
8254
0es5s
0esé

476

GOERDN

e7e

eere

/TRIED

F5§

/OPEN PROPER CURRENT TRACK
/BITT7=@ MEANS UNIT ONE

TRK

TO PROPER

CURTK}

THE

CURRENT

MAGCOM

TRACK

VIA

ADODRESS

IF ABOVE
TEMPF

TEMPG

TPACK

DECIMAL

/RX@1

FLOPPY

562
543
544

S4S
Saé
547
S48
549
Sse
551
55

553
S54
558
556
557
558
$59

CONTROLLER

FIRMWARE

PALLD

9=FEB=76

9317

PAGE

N33y
0332
0333

007S
peee
0064

L&P

2334

ecz2é

SET LOWCUR

/ASSUME TARGET GREATER THAN 43

LCcY

/CALL MAGCOM SUCROUTINE
/RETURN ADDRESS

0335
8336
2337
e3ae
e3ay

0342
0343

OPEN TEMPG

enave

ADvVa3l

2344
P07S

LSR
OPEN RTNA
LSP
JUMP FS

e27o
oR64a

e22é
24ge

HAGCOM

ezee
e3d4é6

560
561
Sé62

P346
0347

€202
2351

JUMP

S63

eise

CLR

2351
235e
2353
2354

ep70
€35S
eeee
€714

CFINSE,

2355
p356

2274

RFINTR,

2357
9360
e361

2250
ev71
ce7s

2362
n363

egee
322

2364
8365
2366

HDSETL

0367

feve
g3e2e
a2ee

2145

bLYeS

g2e7

Te4q

L6R

f344
0345

Sé64
565
566
567
568
569
57¢
S71
572

Vi4ga

JuMP Fo

ABva3,

/NCOP FuG RETURN,
/NOOP

ot
F@

AL
LOWCuk

LCcT

/FeGy

ABOVE YRACK a3

/F>Gy

BELOw TRACK

/CALL FINDSEC

RFINTR

ABOVE TRK 43

43,

WRITE WITH HIGH CURRENY

S''DROUTINE

TO LOCATE

THE CIOSIRED SECTOR

JUMP F1
FINDSE
OPEN RIN

/RETURN FROM FINDTR

JuMP

OPEN

TEMPE

SUBROUTINE

IND

573

S74
575
576

577
S78
579

HOSTPS,

ESP
LSR
BR

SR7

ONE

/NO STEPS REGYIRED
/S50FT HEAD LOAD BIT TO SR?
/718

HEAD LOADFD?

HDSETL

/YES,

LcY

/0y, GO
/RETURN

GO UPDATE CURRENT

58e

/RX@1

2370

eaie

0374

1236

p372
€373

2625

8374
@375
376
0377

opoe
0000
0200
peae

FLOPPY

2226

CONTROLLER

597
598

JUMP

PFUNCT,

PDNRCL,

JUMP

/POINTER

FROM

GETWORD

/FUNCTION DECODE

JUMP FS§
OCNRCAL

/POINTER

/SPARE

DRV?

CHECK

DONE

AFTER

RECALABRATE

LOCATIONS

/0PEN
/CPEN

PAL1Q
WRITE

Videga

9=FEBw76

9:117

PAGE

SECTOR]

/THIS ROUTINE TURNS ON WRITE GATE AT WRTITE
/WRITES A PREAMBLE OF 6 BYTES OF ZEROES, A

599

SUBROUTINE

/0PEN

FIRMWARE
/ [ROUTINE?

CONTROL

LOAD HEAD AND WAIT FOR 2CMS SETTLE TINME
ADDR FRTIM DLY2S SUBROUTINE

FUNCT

581
582
583
584
585
586
587
11
589
590
591
592
593
594
595
596

TURN
DATA

ON
OR

TIME,
DELETED

DATA MARK,
/THEN TURNS QN ERASE GATE,
ENTER WITH CNTRs120 IF
/DELETED DATA, CNTR=8 IF NORMAL DATA MARK,
THE DATA MARK, DATA FIELD,
/AND ONE BYTE POSTAMBLE ARE WRITTEN,
WRITE CURRENT IS TURNED OFF,
/511 MICRO SECONDS LATER ERASE CURRENT TS TURNED OFF,
A MEADER MUST
/THEN BE READ TO INSURE DISK IS STILL UP TO SPEED BEFORE
THE WRITE
/SECTOR FUNCTION IS COMPLETE,

620
6@
602
603

624
605
626

CRC

687
6pa
609
612
611

gL
ALl

612

pane

613
614
615
616

€17

618
619
620
621
62e
623
624
625
626
627

QPEN
LSR
L5P

g214
ea7r5
geed

eap3
e4ou
LS
BHB6

pave
oua7

aue?

ene6l

pate

2411

p14e
2523

412
2413

pevy

LCTY

e1e3
SWGATE,

FLAG

OFF

WRTEN F

PRTERR

OPEN STAT
ESP
SET WGATE
LSR

eeees

eevd

ROTATE

630
631

g417

0234

OPEN

632
633

e4e0
p4ey

eps57
2056
2056

PRECRC

Rars

DATA

BIT

SUBROUTINE

STATe

FIND

/ALWAYS

START

/G0 REPORT

/0EL

DATA

WRITING

ERROR

BIT

TO SR7?

TEMPB

/USE TEMPB FOR
/JAM

THE

CRC

SECOND

GENERATOR

DATA

0120
g4e0

DAMSUP

/DELETED DATA?
/NO, REGULAR DATA

MARK

643
64y

2431

po7e

LCT

/YES,

645

2432

2325

325
DECIMAL

/FLUX PATTERN

2433
ou34
R43s
guze

ee54
eesSy
oo
ee0e

CRC ZERO
CRC ZERO
DISK
DISK

/JAM LAST

8SR7

ZERO

642

650
651

CURRENT

OCTAL

/NOQP

SECOND

HALF

2 BITS

AM PATTERN

DELETED

eue?
RY

ONE
ONE
ONE
ONE
ONE
ZERO

DATA

FIRST

640
641

WRT

WITH

2056
RSy

647
648
649

SECTOR

ENABLE

HALF

guee

646

AND

ZERO

eues
puay
e4es

eese
2856

WRITE

AND

635
636
6317
638
639

Quee2

TRACK

WITH WRITE FLOP CLEARED

CRC
CRC
CRC
CRC
CRC
CRC

634

DESIRED

FINDTR

414
Q415
e416

628
629

/DEL

/CALL

SWGATE
JUMP F@

page

gely

STAT

DELETED

DATA

BITS

MARK

DATA

TO CNTR

MARK TO CRC GEN,

PaLle

0228 CLCSPY CCLTACLAER Flanwapg
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LS8
LSP

/PUT SECOXD MALF OF THE CESIRED ®22K IN TKE TLPR

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€058
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674
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DEC1ITMAL

pase
2403

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CRC ONE
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cuba
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Qal7

JUMP F1i
STASH

/G0 PUT

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Queoe

100
DECIMAL
JUMP F1

1195

Q206
pr60

1070

1074
1072

1073
1074

1075
1076
1077
1078
1079
1080
1001
1062
10083

1004
1085
1286
1087
1268
10069
1090
1091
1092
1893

1094

1095

1096
1097
1098

1099

1100
110}
1102

1103
1104

1107

1110

1141
1112

FILLBUF

111
FUNCTZ2,

pa2oe

JUMP

peeeé
e4oe

1073

1124
1106

/FUNCTION 2

WRTSEC
FUNCT4,

SR7 ZERO

ZERO

SR7

FUNCT6,

/GET 2ND FUNCYION BIT

ROTATE

ZERO

SR7

0CTAL

/FUNCTION &

WRTSEC

PRDSEC,

JPOINTER TO REATM SECTOR FUNCTION

JUMP

RDSEC

/RXQ1 FLOPPY CONTROLLER FIRMwARE

PALLD

Vigaa

9117

9=FEB=T74

PAGE 9=2

1122
1123
1124
1125
1126

J1G0UT 1S5 CLEARED,

IOOUT

EMPTYBUF,SET

. FILLBUF, RCTATE ZERO

peed

OPEN
LSP

FLAG OFF

/NOQP

/ADCRESS THE 1ST BIT OF SECTOR BUFFER

/CLEAR ERREG

CLR BAR SHORT

1120

ea7?2
o177
2152

LCT

LCTY

1126

ee7e
0277
0230

1127

P16

113¢

j21e

1131

eete

1132
1133
1134

2873

1165

1135
1136

1167

1142

o070
1181
geee
2312

1141

e23e

1147

1148

11489

1150
115
1152
1153
1154
1155
1156
1157
1158

1159
1160
1161

1162
1163

1164

1166

1168

1169

t117¢
1174
1172
1173
1174
1175
1176

po4Y

1817

1145
1186

pobl

ERREG

1143
1144

1124

1122
1123
1124
1125

1137

1162
1143

1144

1145

1166
1147

/CLEAR STAT

ROTATE ZERO
OPEN STAT
LSP

221¢
deo6d

1140
1141
1142

SET IT TO INDICATE DATA I8

/MOVING TO THE INTERFACE

2074
@274
2214

P16

1167
b
o

/lFOUTINEI FILL AND EMPTY BUFFER]

1127
1128
1129
1139
113}
1132
1133
1134
1135
1136
1137
1138
1139

=128e}
BR XIIBIT

108307

SET

XRED

EMPTYL
XFRQ,

1CT
LSR
LSP

veea

0363

OPEN TEMPA

eers

11%0
geve

o*3

1126

eo70
0367
g15¢

/SET UP BYTE COUNT TO 128 (8 BIT) OR &4 (12 BIT)

LCY

NEWORO

/WHICH FUNCTION I8 THIS?
'
/EMPTYBUF

/REQUEST DATA TRANSFER

/INCREMENT BYTE COUNT AND RESTORE

JCALL WAITRUN SUBR TO WAIT FOR DATA TRANSFER

JUMP F4&
WAITRN

NEWORD,

OPEN TENPA
LeY
=8e]

B8R X11BIT F
o*3
Lcr
L )]
3V

CLOSED IT
JREOPEN THE BYTE COUNT REGISTER BECAUCE i2WAITRUN
OIVD
/SET UP BIT COUNT IN CNTR TO 8 BITY OR

/RX@1

FLOPPY

1177
1178
1179
1182

’

CONTROLLER

1150

2104

11514

1175

1181

1152

0026

1186

1153
1154
1155
1156
1157

1182
1183
1184
1185

1187
1188
1189
1190
1191
1192
1193

1160

1161}
1162

1194

1214

1215
1216
1217

1218
1219
1220
1221
1222
1223
1223

1225

1226
1227
1228
1229
1230
1231

/RXd1

1232
1233
1234
1235
1236
1237
1238
1239
1e40
1241}

BR IOB3OT
FILLY

BYTEOUT,SET

SHIFT
INCR BAR
CLR SHIFT

2024
oe73
2124

vVidea

9=FEB=T4

/WHICH

FUNCTINN

9117
IS

/FILLBUF

PAGE 9=3

THIS?

/EMPTYBUF,
MOVE A BYTE
/T0 INTERFACE SFRIALLY

FROM

SECTOR

DATA

TRANSFER

1152
807}
8124

B8R

ESP
COFL

1131

XFRQ

1163

fag1e

SET

1164
1165

2102

1166

ante

1167
1173

eete

1cee

OKDONE

1174

/CHECK

/NOT
XREQ

RUN

BYTE

DONE,

/DONE,

/WALT

COynTt

GO REQUEST

REQUESY

TRANSFER

LAST

COMPLETION

JUMP F2

/EMPTYRUF

FUNCTION

2359

FIN

/END

1172

2eas

INCR BAR

/ADORESS

1173

1174

o02s
0e24

SET

CLR ShIFT

/SHIFT

1175

23%3

/START

SECTOR B''FR WRT PULSE

1176
1177
1200

ea73
€124

1e21

225¢

FIN

12ee2

2046

INCR BaAR

/ADCRESS

1203
1ec4a
1208

cery

ESP
BR COFL F

JCHECK

1164

CLR

FILLL,

wWRTBUF

SHIFT

START

ICY

1171

wRTBUF

COFL

oTM

?12aq

SECTOR

/LAST

/NO,
WRTBUF

JLAST

BIT,

/NOT

JoMP F2

/CONE

1212

2032

SEY

/SELECT

1211

cers
oS

1212

FLCPPY

ICY

FIRMAARE

PaL1e

1214

2ava

121s

2367

1216

efw}

2159

1217
jeee
122}
1222
1eel

LcrY

1152

0363

LCY
=lg=}

2212

SECTOR

NS)

BUFFER

INTERFACE

B1T
SECTOR

DUFR

WRT

SECTOR

PULSE

BUFFER

CIy“y
GET

ANOTHER

BYTE

FILLBUF FUNCTION

SECTO®

Viaga

AND

QUFR

SAVE

THE

DATA

9% FEB=74

BYTE

LINE

SCURCE

COunt

Q317

PACE Cea

12 BITS

JUMP F2
8yTecur

1152

FROM

(820

/SET UP THE BIY COUNT TO 8
£ITS CR

XIIBLIT
BYTEOUTY

2978

PULSE

CELL

ZINCREMENT

LSR
LSP

ccea

CONTROLLER

SECCATY

MEXT

CONE,

COMPLETE

ayvgEe

EN®

BYTE

cele

EnPTY],

BIT

WRTY

CELL

DO ANOTHER

1206
1237

CxOCvE

BUF?

BIT

XFRQ

1230

BYTE

XREQ

1131

1213

BUFFER

ICT

8R COFL
BYTEOQUTY

TRANSFER

1199

1213

224s

PaLip

FOR

1195
1196
1197
1198

1eee
1201
1202
1203
1204
1ees
1226
1207
1208
1229
1210
1211
1212

FIRMWARE

IQD MOVE a4 BYTE TO INTERFACE

1242

1243
1244
1245
1246
1247
1248
1249
1250
1251
1752

1253
1254
1255
1256
1257
1258
1259
1260

/[ROUTINE:

1224

eead

122%
1226
1227

2036
eere

egeo

1230

2174

1231

1235

1e32
1233

234
2o7e@

1234

RDSTAT,

1265
1266
1267
1268
1269
1270
1271

1272
1273
1274
1275
1276
1277
1278
1279
1280
128}
1282

1283
1284
1285
1286

OPEN

TEMPD

/SELECT THE SOFT UNIT SCRATCH PAD

UNIT
LCY

ONE

/PRESELECT UNIT

ONE

FLAGO

ZERO

o*d

/AHICH

JUNIT

UNIT

ZERO

Lecr

UNIT?

/SELECT

FLAGSCeUNIT

SKIP UNIT
UNIT

ZERO

0CTAL

Q00

200

DECIMAL

1261

1262
1263
1264

READ STATUS)

1235
1236

eers
o264

LSR
LSP

/STORE

LCTY

/CALL

1237
1249
1ady
1242

1765

PNTRDY

264p

JUMP FS
CHKRDY

1243
1844
1245

2e71
€ce7s

1edé6
1247

1250

1251
1252
1253
1254
1255
1256
1857
1eee

ecve

2226

Pety

o6}
eeve
2372
g1ee

1256
1ag

e21e

1257

eeve
2273
21e4

CLRID,

OPEN STATY
ESP
LSR
FLAG

SR7

ROTATE

JUMP

ZERO

ROTATE

ICT

CHECKRDY

/STATUS

/END

L -1 N

UNIT

INIT
TO

BIT

SUBROUTINE,

DONE
SHIFT

BIT
REG

RETURN

OF STAT

OFF

LCr

ROT,

/CLEAR

SOFT

COFL

ONE
F

AROUND

SMIFT

FIRST

BITS

TO CLRID

/RXB)

FLOPPY

CONTROLLER

FIRMWARE

PALLO

1287
1288

1264

12514

1290

1263

1262

0176

BR FLAGO
GODUN

1264
1265
1266
1267
1270
12714

062

1293
1294
1295
1296
1297

1289

1291
1292

1298
1299

1320
1304
1302
1303

1304
13e5
1306
1307
1308
1309
1310
1311

1272

1273

1274

{e7e

JUMP

1251

ROT,

pe1o
0212

1277

1010

1312

1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324

1325

1326
1327
1328
1329
1330
1331
1332
1333

1334
1335
1336
1337

1338
1339

1340
1341

/RXQ1

1352

CLEAR

RDEREG,

/RESTORE STAT

READ

ERROR

OPEN

ERREG

JUMP

INIT

DONE

AND FINISH ROTATE

AND GO DONE

OKDONE+2

/AND

MULTIPLIER

THE

A264

goed

OPEN
LSP

1302

2075

LSR

/MULTPLIER

1303
1304

e2@5

2070

LCT
wl22e}
ICT
OPEN RTNB

/DELAY

CYCLES

1305
1306
1327
1310

DELAY,

ee73

2264

RTNB

/SAVE

THE RETURN

490

2124
1305

o871

/MOVE

ZINCREMENT

COFL

ADDRESS

SHIFT

(98

MICRO

SECONDS)

1311
1312
1313
1314
1315

go64

ESP
L.SP
LSR
ESP
LSP

1316

wEe73

ICT

1317
1320

n1ed
1321

DELAY#+1

1321

ceels

JUMP

gae6d

2075
ee71

CONTROLLER

IN MULTIPLES

COUNTER

1300
1301

BR COFL F
Fd4

FIRMWARE

MULTIPLIER

/ANY

MOKE

/YES,

IND

/NO,

PALLD

V142A

THE

,1M8
TO IT

RETURN

CNTR

VIA

RTNB

MULTIPLIER

LOOPS?

FROM

SUBROQUTINE

9eFEB»76

/[SUBROUTINES WRITE ZERUES)
/THIS JUBROUTINE WRITES A SPECIFIED
/WRITE GATE IS ON, IF WRITE GATE IS

9:17

NUMRER

OFF

ZEROS

ACTS

PAGE

1355

1324

2275

LSR

1357
1358
1359
1368

1325

2239

OPEN

1326

2e7e@
2374
eer3
o124

ARTRS,

OPEN

RTN

LSP

LooP,

/SAYE RETURN

/PUT
TEMPA

LCY
LR L)
ICY

BIT

/TEMPA

ADDRESS

COUNTER

IN SR

THE PATH

THROUGH

THE

/STALL 2,6 MICRO SECONDS

1327
1330
1331
1332
1333
1334

eary

2264

LSp
ESP

ZNOOP
J500P

1335

2263

TOG FLAG

/WRITE A CLOCX TRANSITION IF WRY GATE

1369
1370

1336
1337

2eea
2271

LSP
Ese

/PUT EIYT COUNT

1372

1342

o7l

1373
1374
1375

ICY

/INCREMENT BIT CCUNTY

138}

eers

LSR

/PUT UPDATED BIT CCUNT

1342
1343

f12a

1320

B8R

Loop

/N0

1345

1344

c2va
eee?

JUNP IND F1i

OPEN RTN

JYES,

13c0
1347

e2e2
eel?

JUMP Fsa

/POINTYER TO GETwORD FRON WAITRUN

1.6}

1362
1363
1364
1368
1368
1367
1368

137}

1376

1377

1378
1379

15302
138y
1302
1303
1308
1309

/DELAY QF N,5 BITS, ENTRANCE IS MADE WITH RETURN ADDRESS
/1IN ThHE SR, NUMBER OF BITS IN THE CNTR, AND A CLOCK
/TRANSITION OCCURRING IMMEDIATLY PRIOR TO THE JUMP INTO
/THIS SUBROUTINE,

2274
@264

1356

NOT,

LSP
JUMP F2
OKDONE

1322
1323

1353
1354

/1F

/[SUBROUTINE: DELAY), THIS SUBROUTINE PROVIDES DELAYS
/0F o AM§, ENTER WITH RETURN ADDRESS IN THE SHIFT REG,

FLOPPY

1342
1343
1344
1345
1346
1347
1348
1349
1350
1351

GODUN,

1006

1276

PAGE 9=5

LCT

/[ROUTINEs

1275

9117

wlui

gete

eood
maie

9=FEB=76

/I1F FLAG IS SET THEN ROTATE 1S DONE

FLAG ON
ROTATE ZERO

gev4
feva
e37s

Vid42A

1339

COF| F

PGOTLY,

COFL F

GOTITY

I8 SET

TN THE COUNTER

BACK

IN SR

/00NE ALL DITSY?

RETURN FRNM SUCROUTINE

138¢

13067
1368
1509
15%0
13191
1592
1393

1%9a

13595
1396

/{RCUTINES

INITIALIZE CONT,)

1352

o261

TE3T2,

FLAG OFF

/CLEAR FLAG TO YHDICATE R10

1353

eoTe
0372

TESTY,

2122

TSTAGN,

LCY
eSe1

/1T CAN EBE SHIFYED,

1352

1353

1354
1358

1356

1374

geve
plae

/LOCP TO TEST THAT SR IS 252 AND THAT

EBR SR? ZEROD
INTERY

ROTATE

IS CEING YESTED

ONE

BR SR7 ONE

/TEST FAILURE

/RX@1

FLOPPY

1397
1398
1399
1400
1404
1402
1403
1404

CONTROLLER

1357
1360
136}
1362
1363

FIRMWARE

1374

PALLD
INTERY

gevd

3073

ICT
BR

1353

TSTAGN

1365
1366

Pese
2071
7075

ESP
LSR

1367

gova

ROTATE

1409

137¢

1410
fdiy
1412
1443
1414
1415
1446
1417
1418
1419

1374

2176
1350

1405

1406

1e@7
1408

FRX21

1364

1372

TESTON,

1428

1434
1432
1433
1434
1438
1436
1437
1438

1439
14409

1441
1442

1443
1444
1445

1374

eave

1375

INTERY,

geie

1448

1449

1450
1451
1452

1453

1454

1455
1456
1457
1458
14%9
1460
1d61
1462
1463

1464
1465
1466

1467

1468

1469
1470

FLAGO

ERR

1031

1377

CONLTROLLER

FIRMWARE

PAL1D

/ENTER «ITh
/0R CELETED

THE RETURN
DATA MARK,

OPEN

7232
227

ONCF

S8R

R1Q@

OFEN

LSP

7234

OPEN

207¢
374

.3-1

TRYAGN,

TFSTED

RETURN

/SELF

TEST

125

ERPOR,

125

2S2

ALREADY?

REMAINING

SET

INITIALIZE

ERROR

9=FEB=74

AND

FIND

LEGAL

ADDRESS

DATA

9417

ADDRESS

HEADER

(CPRRECT
CNTR,
ALSO

LNCATES

RTNB

/STURE

RETURN

ANDRESS

TEMPA

/7256

TEMPB

BAD

2249
ge72
a347
2a7s
864

OPEN

MORE®RS,

BAR

LONG

TEMPC

LCT
241
LSR
LSP

=200e1

2a7s

LSR

0346

WER

LCT

START

SEPCLK

JUuMpP

1667

iS4

DEGSR7

BAD

FOR

/24

CNTR

/WALT

/ERROR,NO

TIMERR

FOR

/RESET

/PUT

o*3

2216

CNTR

/RESTORE

9870
ace7

1432

/RESTORE

LSP
CLR

/WHAT

ROUTINE

SET

PAGE

DONE

MARK]
CRC AND
ROUTINE

SIX

INNER

TRACK #)
TO FIND A

BYTE

DATA

PREAMBLE

MARK

ZEROES,

COUNT

ZERO

MICRO

SEP

/ZERQ

FCOUND,

e124

{421

MOREDVS

o061

FLAG

CUTER

4296

BIT

DATA

ESP
1CT

LCT

COUNT

FNR

eery
2073

SECONDS

COUNT,

768

PREAMBLE

BAD STARTS

FAILURE

ALLOWED

COUNT

COMPARISONS,

FOR

SEP

ALSO

CONSTANT

FOR

¢0

CLK

SEP NATA?
CHECK PREAMBLE

CHECK

ZEROD

FAILURES

COUNT

F
/NEED MORE ZEROFS FOR PREAMBLE
/FOUND PREAMBLE, CLR FLAG 70 INDICATE

OFF

BAR

COUNT

SR7

IS
GO

CLR

START

COUNT

/0NE,

GETDAM,

START

BIT

NOZERO

COFL

RAD

ZERO

1746

geve

CHMANGE

ROUTINE

LSR

2045

1474

SHOULD BE

SR,

/THIS

LCT

eeed

2g4s

LSR

ze6d

1472

217"

BEEN

/YES,

LCT
-1

8377
aB1s

2275

LOCATE

LSR
LSP

2e64d

/SHIFT

Videoa

FINDHEADER

/SUBRQUTINE

FINDHMD,

/0PEN

/[SUBROUTINET

2264
Ae7s

/CONTENTS

/HAS

2429

FLOPPY

ONE

TSTRTN

SET

9e7

FAILURE

/N0

1376

147}
1473

ZERO

JUMP F2
STDONE

1446

1447

R1G

JUMP

PAGE

TESTR

2eoe
eegad

9817

ZERO

COFL

OPEN

1373

1420
1421
1422
1423
1424
1425
1426
1427
1429
1432

/TEST

ROTAYE

9«FEB=T74

Videa

LONG

/START

/WAIT

MICRN

FNR

SEC

IDAM

DATA

FOR

SEP

CLK

AM,

BAR

SEARCH FOR
IS

NOSTART

1DAm
COUNTER

MICRO

CEC

KAIT CRa!

/RXQ1

FLOPPY

1475

1476

CONTROLLER

1443

2067

FIRMWARE

PALLD
=20P=]
KBR SEPCLK

1444

0346

1477

1445
1446

16450

1479

2216

1447

1667

1481

1459

r156

1482

1451

1755

NOTYET

tusSe
1453

72164

1673

1487

1454

1488

1478

1482

1463
1484
1485

14806

1089

1490
1491
1492
1493

o*3
JUMP

PRECRC

1488
1456

/JAM

1ST

1457
1460

2e79
geer

/wAIT

1461

LCcy
=2CQCwl

v3do

/DAYTA

SHOULD

vORE

CPC

SEPCLK

1464

1667

TIMERR

1665

2156

Bik

1666
1667

1673

BADSRT

2106

1472

1673

BR “CEQGSR
BADSRT

1473

pese

1497

1472

1473

1469

1511

1516

1517
1518
1519
1928

1921
1522
1523
1524
1525
1526
1527
1528
1529

/RX2]

1475
1476

2056
¢0S6

1533

1534
1535
153¢

1537
1538
1539
1542
1544
1542
1543

CRC

OnE

CRC

OME

CRC

OnE

»ER
o*3

SEPCLK

2154
173

baPsRY

ated

173

QLLSRT

2072

LCcrY

Juve

DESSRT

1511
1512

L
arev

LeT
=20 2w}

1513
151¢

v3d0

~8R

1517

1515

?élé

JuMP

1667

TIFERW

FCUR

/DAT4

SKCULD

/oAIT

DEGSKT

VIid2aA

SEP

CLOCK
CLOCK

AT
R 81

FGR

FIFTH

/DATA

ShOULD

HADSRKRY

152%
1526
1527
1532
1531
1532

opT0
X4
asT-

-22%=1

Qa3dé

wRE

MCEGSR

LCY
SEPCLK

1673

BADSRTY

1683
1554

1541

2256

CRC

OiE

/JAM

1555
1556

1542

2272

1543
1544

LCT
=20 Q=1
wBR SEPCLK

/WAIT

FOR

2346

1550

o+3

/DATA

SHOULD

/NOOP

FOR

1577
1578
1579

158¢
158}

1582
15683
1584

DEQISRT

FLAGO

MCEQSR

cele

JUMP

1667

TIMERR

7156

/1F

2164

1673

BADSRT

1554

ae4e

LOKD

1555

@56

CRC

1556
1557

2372
0067

LCT
“220=1

1562

2346

WBR

MCEWSR

/FINISH

ONE

/JAM

SEPCLK

1561

1564

1562

ot3

d21e

JUMP F3
TIMERR

2156
1673

FLAG

SET

®RE

FINISH

CRC

LOOKING

MISSING

IDAM,

6TH

PIT

SIXTH

CLK

IDAM

BIT

CELL

MISSING

FOR

DATA

SHOULD

1564
1565

CELL

DEGSR7T
BADSRT

1667

BIT

1673

1563

MISSING CLK SHOULD BE F

ot3

gLres

1576

1537
1540

1575

DAM

1572
1573
1574

10e2

9817

SEP

1570
15714

PLGE

CELL

LONT

1678

1568
1549

BYT

LOMNS

Z17%6

1567

FOR

1535
1536

1565
1566

FLR

BADSPT

1564

CELL

/NCCP

1¢73

1952
1591
1552
1553

SHOULD

BIT

/5%00P

BrR

1562
1561
1562
1563

MISSING CLx

B1ITS

.onHD

2164

1545
1546
1547

LOHD

vode

1673

1559

SHCuULD

dALSPT

g2e67

SHOULD

9-F£B.76

3156

1557
1558

CLK

/D&Ta

1673
Adue

1524

1552

CELL

1533
1534

1519
1559
1551

MISSING

®E

4T+

TIMERRK

1548

SECOND

PaLte
B8R

F(R

1¢67

1547

FOR

JumnP

1546

CRC

SECONDS

THIRD

A216

1544
1545

SEPCLX

FIRMSNARE

2154

1533

MICRN

/+A1T

/ULEAR

LSR

1522
1521
152¢
1523

RITS

BEEN

SCEISKR

RREA-

1517

CONTROLLERW

HAVE

1527
15

1516

/Jav

Yxrtm:

1506

STARTS

LCcyY

1667

1534
1505

MANY

LY-E

152
1591

FLIPPY

1539
1531
1532

deta
2ce7?
e3ub6

DEGSR7

1522

1523

16477

1502

ot3

1526
1474

10=}

CLOCK?

TWO

OME
ONE

- wBR

PAGE

NATA?

evs?
2esSe6
2056

CRC
CRC

9117

DETERMINE

SHOULDN®T

1496

1512
1513
1514d
1518

SEP

/YES,

JUMP

1507
1508
1529
1510

BADSRT

eele

1529

/WHAT

MISSING

1463

15¢4

ERROR

/0ONE,

1462

1532
15¢})
15¢e
1923

MCEQSR

1494

1499

/TIMING

/ZERO,

14%s

1498

9=FEBe74

TIMERR

DEQSRT

VI4Z2A

1566
1567

166

1673

BR DEQSR7
BADSRT
BR MCEQSR
BADSRT

1570

Pesy

CRC

ZERO

TTH

LONG

CRC

/WAIT

FOR

/DATA

SHOULD

SEP

RIT

SHOULD

CLK

SHOULD

CLOCK

SEVENTH

CLK

IDAM

BIT

CELL

1§,

MISSING

/1DAM FOUND,

JA“

LAST

CRC

BIT

/RX@Y

FLOPPY

CONTROLLER

1588
1586
1587
1568
1589
1590
1591
1592
1593

1594
1595
1596
1597

1598
1599
1600
1601
1602
1603
1604
1605
1606
16027
1608
1609
1610
1611
1612
1613
1614

1615
1616

1617

1618
1619
1620
1621
1622
1623
1624
1625
1626
1627

1630
1631

1632

1633
1634
1635
1636
1637
1638
1639

/RXB)

1571

HORCOM,

OPEN
ESP

1573

geee
2871
ee7s

1574
18758

ep70
8367

1576
1577

etuu

1576

1600
1621

156
1625

1602

eer4
0216

ROTATE

1603
1604

1610

16925
1626
1607

ag1e

2eve

/8ET

poed

OPEN ERREG
ROTATE ONE
LSP

1610

2055

DATCRC

/UPDATE THE CRC

1612

1611

2073
2124

1613

1576

ICT
BR COFL
AGAIN3

1614

1615

7670
0367

LY. LB

1616

e1ud

/SET BIT COUNTER TO 8

LCTY

AGAINY,

SEPCLK

/WRAIT

DEGSRT

/SEP
/NO,

JUMP

ERREG BIT

SEPCLK

FLAG

OFF

pee6d
peél

FLAG
FLAG

OFF
UFF

FLAG

OFF

1624

2055

DATCRC

1625

2873
2124
1616

ICT
BR CUFL

/WAIT

/NOCP
/NCOP

FOR
FOR

LONG
LONG

SEP
SEP

CLK
CLK

ZINCREMENT

/GO

FIRMWARE

/THE

PALL1D

RCUTINE

COMPARES

THE

ADDRESS

SECTCR

TRACK

COMPARE

ROUTINE,

ADDRESS

/SET

BIT

' *3

1658
1659

1641

2216

JUMP

1642

1644

1643

2362

FLAG

1644

eard

ROTATE

1645
1646
1647
16502

@pss
ee73
2124

1635

DATCRC
ICY
BR COFL
AGAINS

1670
1671}

1651
1652

eare
2347

LeT
“2y=y

1673

1653
1654

2144

1653

1655
1656

ROTATE

ZERO

ROTATE
ROTATE

ZERO
ZERO

1660

eav4
274
ee74
o074

ROTATE

ZERO

1661

eess

DATCRC

1662

2273
0124

1653

ICT
B8R COFL
AGAING

1665
1666

Be2é
es1s

JUMP FS
CKHCRC

/YeS,

1667
1670

LCcT

/4@

1671

eere
2110
0226

1672

2612

TARSEC

SET

THE

FLAG,

LSR
LCY

COUMTER

FOR

BITS

LB}
AGAINS,

AGAING,

SEPCLK

/WALIT

DEGSR7

/H0w

/BAD,

TIMERR,

FOR

BIT

DO THEY

COMPARE?

GO SET

/SET FLAG TO INDICATE MISMATCH

JUMP F5S
GOERDN

ERROR

FLAG,

BIT

/UPDATE THE CRC
/8UMP THE BIT COUNTER

/ALL BITS COMPARED?
/NO, LOOP BACK

/YES,

SETUP

YAIT

FOR

£ND

/CRC

SEPCLK

KTIMERR

/BRING

THE

FLAG

/G00D,

ZERO

SKIP

THF

1682

1694

10=4

ESP

1657

1693

PAGE

SECTOR ADDRESS WITH THE
IT IS ENTERED FROM

SECTOR

OPEN

FLY,

9117

/TARGET

1643

1692

COUNT

RIT

wWILL

2156

1687

BIT

MISMATCH

1637
1640

1668
1689
1690
1691

TEST

9=-FEB=764

HEADER

THE

1664

AND

ANOTHER

Vidza

1635

1685
1686

CRC

/CONTINUE

/TH1S

1663

ROUTINE

CLK

glu4

1683
1684

NEXT
SEP

1635
1636

1681
1682

FOR

LONG

AGAINA

/TARGET

1657

FLAG

/UPDATE

BIT

FOR

eu7e
a367

1677
1678
1679

FOR

/CLEAR

1633

1674
1675
1676

TRACK ERROR

SET UP BIT COUNTER FOR

/NOOP

1649
1650
1651
1652
1653
1654
165S
1656

1672

INDICATE

ANP TEST THE BIT COUNTER

/TRACK COMPARED,

@z2ed
271
2275

1668
1669

7 TO

/60 DO NEXT BIT

20961

1634

GET NEXT TRACK ADRESS BIT

ZINCREMENT

P61

CONTROLLER

/YES,

ZERO

CELL

LCcr

AGAING,

FOR BIT

DATA EQUAL TO SR7?
TRACK COMPARE ERROR

1630
1631
1632

1667

10«3

o8=1

16400
164])
1642
1643

1662
1661
1662
1663
1664
166S
1666

PAGE

LSR

1616

FLOPPY

1646
1647
1648

9817

/TARGET TRACK ANDRESS 70 SR

TARTRK

1572

1626
1627

1644
1645

9=FEB=T754

IT IS ENTERED AFTER
/DESIRED TRACK ADDRESS ON THE FLY,
/FINDING THE IDAM, ERREG BIT ? I8 SET IF AN ERROR I8 DETECTED,

1620
1621
1622
1623

1629

Vidaa

/THIS ROUTINE COMPARES THE HEADER TRACK ADDRESS TO THE

1617

1628

PaL1@

FIRMWARE

/WALT

FOR

BITY

/NOOP FOR LONG SEP CLK
/NOOP

FOR

/NOOP FOR
/NOCP FOR

LONG

SEP

CLK

LONG SEP
LONG SEP

CLK
CLK

/UPDATE CRC
F

/BUMP THE BIT COUNTER
/ALL DONE?
/NG, LOOP BACK

GO CHECX

TYF CRC

MICROSEC PASSED

AND

ALL ZEROES

NO SEP

CLOCK

WAS

SEEN

/RX2Y

FLOPPY

CONTROLLER

FIRMWARE

PALLA

V1424

9=FEB= 74

9117

PAGE

10=5

DATA

DELETED

DATA

1695
1696

1697
1698

1673

neeeé

1674

2555

1675

€166

1699

1700
1701
1702
1763
1724
1705
17¢6
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1732
1731
1732

1733
1734
1735
1736

1676

JUMP FS
BOSRT

0AM,

BR MCEQSR
BADSRT

1673

1677

254

1700
1701
1722
1703
1724
1785

2072

1706
17027
1712

BADSRT,

/POINTER

-200=1

1706

SEPCLK

o *3

rele

JuMp

1667

TIMERR

2164

BR MCEQSR
BADSRT

LDOKHD

1711
1712

2156

1727

DELDAY

1713

2ase

CRC

ae7e

nu6e?
2346

1722

CRC

FOR

RIT

SIXTH

/MISSING

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DEGSRT

CLK

FOGR

LONG

/1F

DATA=@

ONE

/JAH

TTh

LCY
=2C 2=}
WER SEPCLK

/WAIT

FOR

/JAM

LAST

THEN

BIT

1724

1742

/DATA

EnDDAN

SHQULD

SBE

/FLAG

1725
i726

za16
1673

JuMP

/LAST

BADSRT

DATA

1744
1745
1746

1727

2254

1747

1730

1731

@u7e
AL

1732

=23y=]

B3d6

~BR

1750
1751
1752
1753
1754

1755
1756
1757

1758
1759
1760
1761
1762
1763
1764
1765

1766
1767
1768
$769
1772
1771

1772
1773
1774
1775
1776
1777

1778
1779
1789

1781
1782

1783
1784
1785
1786

FLOPPY

CONTROLLER

1733

CRC ONE

CELDAT,

1796
1797

1798
1799
1800
1801
1802

ZERO

CRC

/JAM

SEPCLK

BIT

CRC

FCR

PALYI@

Videa

P26l

FLAG

OFF

/CLR

FLAG

1737

2854

CRC

ZEROQ

/JA1

LAST

CRC

1740

@154
-

bR DEQSR7
BRADSRT

/DATA

/MISSING

CLK

/GO

1742

2164

1743

1673

BADSRT

1744

geee

1745

2ceo

JUMP
DATA

1751
1752
1753

ENDDAM,

NOZERG,

NXPRAM,

31206

MCEQSR

INCR BAR
BR BARQFL
TRYAGN+3

1754

e61e

GOERDN

1755
1756
1757
1760

goue

1762

1761

2072
213¢

1763
1764

2226
2610

1765

gele

1766

1243

NOTYET,

cue

/INCREMENT

NORMAL

DATA

MARK

DEL

DATA

DEL

DATA

9:17

PAGE

10=6

SHOULD

DATA

ANM

DEL

DATA

FOR

BOTH

MARK

DATA

AMS

FIELD

TEST

/0K,

TRY

AGAITM

FOR

/T00

MANY

BITS

WITH

PREAMBLE
A

FAILURE

COUNT

PREAMBLE

ZERQES

BAR

/INCR

AND TEST IDAM OR
/NOOP FOR LONG

/0K,

LCTY

/700 MANY ZERDES
/IDAM OR DATA aAM

NXIDAM,

DELETED

pele

BAD

BTT

GETDAMS]

1778

DATA

INDICATE

INPICATE

1442

1243

WAS

eLep

177¢

1772

INCR
LOHD

S5HOULD

PICK

KNXPRAM

JUMP

geie

DATA

CFLL

LCY

2226

1767

JuMp

1673

1416

BIT

ot3

1736

1750

G=FEB=T76

¥3
TIMERR

2160

DATA

1667

2046

FOR

RIT

7TH

ee16

1746

CLK

LOOK

SET

TTH

/WAIT

BIT

1735

1793
1794
1795

FIRMWARE

BAROFL

KNXIDAM

Jump

FS
GOERDN

1787
1788

1789
1790
1791
1792

DEQSR7

LCY

1736

{747

JUMP F3
TIMERR

1734

1741

ot3

2154

/RXP1

CELL

SEVFNTH

1723

1748

BIT

ecsSe

1749

DATA

SEP

1722

1741

SHAULD

1721

1742
1743

IDAM

eat1é
1667

1737
1738
1739
1740

1673

1722

6TH

/WAIT

dede

1714
1715
1716
1717

/JAM

LCT
WBR

BADSTART

/MISSIN
CLK
G SHNULD BE T

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ege67
A346

PNTRDY,

JUMP

PYSRDY,

CLRID
JuMp Fa
CLRID

PNORDY,

JUMP

TRY

WHILE

FRO“

CHECKRDY

/POINTERS

FROTM

CHECK

1773

OKDONE

n226

JUMP

1774

2631

INTRDY

1775
1776

poee

1777

geoo

/70PEN
/0PEN

/0PEN

START

LOOKING

FOR

FAILURE

COUNT

AGAIN

/POINTERS

1026

DATA AM
SEP CLK

ROY

SUBROUTINE

START

INITIALIZE

RDSTAT

ROUTINE

/7001

FLOPPY

1803
16046
1C0%
1606
1007
1608
1009
1810
10114
1612

1613

1814
1815
1816
16817
1818

1819

1820
1621
1022
1623
§824

1625

1826
1827
1828
1829
1830
183§
1832
1833
1834
1835
183¢
1837
1638
1839

CGNTROLLER

FIRMWARE

PALL®

/([8UBROUTINESS

JO0ESIREC nORD IN THE SHIFT
/CHECKED ON ALL wORDS,

2000

oe1e

GEYwRD,

PAGE

euey
2eee
eeosl

oers
o2re

GETCMD,

2024
2005
2006
aeat

2u70
1346
eeee
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2010

eesl

2etl
o1

eeod

2043
2014
2o1s

2070

2uté

2217
c2daeg

LS8R

/8TASH THE RETUON ADDRESS

OPEN RTNA

L8P

0064

/CALL SUBR

LCcT

PGOTIT
JUMP

GoTIY,

OFF

FLAG

/CLEAR

CLR
CLR

ERR

/IN CAS8F

DONE

LCT

e367
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202}
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-6-1

B8R

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RUN

BIT

PARITY

CHECK

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TO DONE

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1842

2025

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2234

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1845

2030

2363

2231
232

2126
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1858

2333

ROTATE

ZERO

1857

2034

2026

NUTHER,

CONTROLLER

FIRMWARE

1846

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2126
20841

2veb

WAITAN TO WAIT FOR

WAITRN

eg2e

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PARITY IS COMPUTED AND

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223l

202!t
2dee

FEGISTER,

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2ead

1843
1844

L 12%4

/SUBROUTINE TO GET AN EIGHT BIT wORD FROM THE INTERFACE,
Z1F TALNING TO A PDPB INTERFACE IN 12 BTV MODE, THIRE
7alLL BE FOUR MEANINGLESS B8IT5 PRECEDING THE CESIRED EIGHT
/BIT wORD, ENTER TH]IS SUBROUTINE WITH THE RETURN ACDRESS
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B8R DATAIN
GOTONE

1841

SeFEB=T4

GETWORD AND GETCOMMANDY

eel3o

184

viaza

COFL

ONE

/WHAT IS8 THE NATA BIT?
/1ITS A ONE, GO SAVE IT

/1TSS A ZERQ, WAS IT THE PARITY
/YES, GO CHECX PARITY
/NO SAVE

ONE

/G0

NUTHER

THE

SHIFT

PATA

BIT

ANNTHER

BIT

COMPLIMENTED

(9TH BIT)?
IN

BIT,

1847

184638
1849

1850
1854
1852
1853
1854
1856

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FLOPPY

1858
1859

2335
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1862
1863
1864
1585
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1867
1868
1069
1870
1671
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1677
1078
1879
1680
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2e37

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eeday

2021

rATDAT

204l

2242

eddsl
2244
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2046
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e2se
2051
2252
2v53
2054
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2056
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2762

2176

ChKPAR,

2276
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eari
227S

eo70
372
vi122

BR
FLAGO
GOTwWRD

227a
seee

2056

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THE

PULSE

V14cA

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PARITY

AND

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9=FEB=T74

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THIS

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STAT

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225¢

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PAGE

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OPEN §TAT
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DATA

9317

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2124

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2055

/NO,

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PaLin
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9273
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167a

TUG

SHIFT

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BITS

STAT

ONE

2c74
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ROTATE

ZERO

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2063
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2ces

2122
2370

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2C67

e27d

2071
2076

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169a

2¢e7

220ea

LSP

/RESTORE STAT TN SCRATCH PAD

1698
1697
1098
1099

2272
2273

2272
0212

LCTY

JERRCCDE FOR PARLITY ERROR

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2610

1692

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1692

1893

1698

1002

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CONTROLLER

1903

19024
1905

FJRMWARE

PALL?

9=FEBe76

Q317

PAGE

/7 [SUBROUTINES STEPHEAD]
/THIS SUBROUTINE WILL STEP THE SPECIFIEN NUMBER OF TRACKS IN THE

19026

/SPECIFIED DIRECTION,

1907

1908
1909

DIRECTION
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IS OFTERMINED B8Y

THE MD DIR FLOP

/THE NUMBER OF STEPS IS IN THE SR,
RFT''RN ADDRESS IS IN TWE CNTR,
JEXIT IS TO THE RETURN ADDRESS IFf HOMF TS DEYECTED,
EXIT IS TO RETURN

1610

/PLUS 2

IF THE LAST _STEP HAS BEEN TAKEN,
AFTER THE LAST STEP IS TAKEN,
/THE HEAD IS LOADED AND A 25MS DELAY 18 EXECUTED FCR HEAD SETTLE TIME

1914

1912
1913
1914
1915

1916

1917
1918
1919
1920

eivy
2102
2103
2104

@aae6u
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2074
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2270

STEPHD,

2120

1922

2185

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CKHOME,

1923

2126

215¢

1925

2127

1921

1924

1926

OPEN

0n13

1928

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1930

2113

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1934
1935

2117

2341

1929

ity
2115
2iie

1931
1932
1933

1936

2l12¢

194¢

2123

2122

9ele

1939
1941

1942

2124

1943

2125

1945

2126

1952
1951

2133
2134

1944

2127
2132
2131
2132

1946
1947
19u8
1949

19%2

1953

2135

1955
19%6

2137
2142

2136

1954

LCT

2¢1¢2

SECPLS,

227a

/YES,

GO EXIT

/NQ,

INCREMENT

STEP COUNT AND STORE IN TEMPA

/ISSUE STEP PULSE

JUMP F2

/CALL DELAY SuUBR

SET STPHD

/ISSUE SECOND STEP PULSE

Lcr

/CALL DELAY FNR 3MS DELAY

STPHD

CLR STPHD
DONSTP
LSR
LCT
=3}

JuMr F2
DELAY

w2l
13029

239

YOME?

/PASS 30 TO OFLAY SUBR FNR 3IMS DELAY

DELAY

2135
2075
Cy¢7a
234y

TO CNTR

HWEAD

SET STPHD

CLR

1309

2010

THE

AND MOVE STEP COUNT

w3Qey

0pele

@ele

SECPLS
LSR
LCT

2124
0nevs
Q279

212l

/718

RETURN ANDR

NDPEN TEMPA

@23p

1937
16938

ICT

L.SR

2111

WOME

/STORE

ouT

@a7%

1927

RTNA

LSP
LSR
ESP
LSP

211e

DONSTP,

124
2105

OPEN TEMPA

JCHECK STEP COUNT

BR COFL F
CKHOME

/NOT

ESP

1957

/RX21

V142A

DONE,

GO CHECK

HOME

FLOPPY

CONTROLLER

FIRMwaARE

1658

2143

2272

1963

2145

0270

OLY25,

2152
2151
2152

Qou2
2252
2g72

ouT,

2153

uveea

2154

2@7s

1959
1962
1561
1962

1964
1965
1966
1967
1968
1969
197¢
1971
1972
1673
1974
1975

1976

1977
1978
1979
168
1981
1962
1983

1984

1985
1986

2142
2143
2146

2146
2147

2155

0Qpe6d

2156

0270

2187
2162
2i6l
2lée
2163
2164

2165
QoIS
2270
@nay
2212
1320

2165

0278

2166

OPEN

2071
@273
2273

2Y7S
da6u

08203

PALLI®

ESP
ICT
ICT

RTNA

(UPEN RTHNA

LSR
LSP

LDHD
OPEN TEMPE
LCT
OCTAL
229
DECIMAL
LSR
LSP

LCT

OPEN RTNA
JUMP

9=FEB=Thk

/DONE

STEPPING,

/STCRE

RETURN

/LOAD HEAD
/SET SOFT HD

/CALL DELAY

DONDLY
LSR
LCT
=25%=1
JUMP F2
DELAY

DONDLY,

V1i42A

IND

9:17
INCREMENT

ANDRESS

LOAD

SUBR

RETURN

ALSO

START

PAGE

12=1

ADDRESS

DELAY

25MS

SUBROUTINE

BIT

FOR

25MS

DELAY

/RETURN FROM STFP HEAD OR DELAY 25MS SUBROUTINE

1987
1988
1989
1990
1991

1992

1993

1994

/[ROUTINEL

199%

2167

1999
2020

2173

1996
1997
1998

2172
217y
2172

2001

2174

2004

2177

200¢e
2003
2285
2026

2pe7

2008
2009

2010

2ol

2012

2270

@374
@234
o@er1s
Qee6d

270

READ,

READ SECTOR CONT,)

LCT

LELB!
OPEN TEMPB
LSR
LSP

LCT

/STALL FOR 96 MTICRO SEC (3 BYTES) TO AVOID WRT TURN ON SPLASH

FLAG ON

/SET THE FLAG TN SPECIFY DATA AM IN FIND AM ROUTINE

ICT

/CLR COUNTER AND SR

JUMP F3

/G0 TRY FIND THE ADDRESS MARK

2175
2176

@ea7
273

wi{20=}
ICT

2201
2281

0iz24
2176

BR COFL F
3

2oee

2ege

Qo713

2204

Q216

2203

2205

2a7s

1441

/3 TC DATA MARK TRY COUNTER

LSR

GETDAM

/RXGY

FLOPPY

CONTROLLER

2o13
2214
2o1s

FIRMWARE

PALLR

Videa

QeFEB=Ty

DELETED

IT MCVES TwE ANFXY 1024 BITS
BUFFER, THEN PICKS UP AND CHECKS ThEt CRC,

2020
2eet
2022
2023
2v24
2025
2226
2027
2e28
2029
2e3e
2e31
2032
2033
223
2e3s
2236
2037
2038
2239

/CLEAR

CLR

BAR

2297
2z21e

SEPCLK

START

2212

DATCKRC

2213
224

BR BAROFL
GETCRC

%
L

FIN

WRTBUF

DATA,

2206

a2e1e

THE

aRYBUF

/START

THE

/UPDATE
Y

/NO,

BAR

/ADDRESS

2217
2220

vade

JUMP

F 4

/LQOOP

c2e7

DATA+]

2d21

Ba50

2241

2e22é
2223

Qw7
V3557

wjb~]

2ede
243

2ezad

FIN

wRTBUF

LCT

2144

2R44d

2225

2224

2945
2046
2ed?
2048
2049

2aeaé
2ee’?
223
2231

Puug

LOHD

dede
2042
dede

LDHD
LOHD
LDHD

29SS
7073
gled
L

CAaTCRC
1Cc7
8R COFL

2236
2237
ceue

p21u
ne71

OPEN
ESP

2275

LS8R

-471-17]
2r61

2241
2242

Aiee

22ué

.ty

2262
2e63
2itéa

2243

ANTY

ROTATE

22da

2222

JUMP

2es?d

2232
2233
2234

2235

SEPCLK

TnE

END

INCR

GETCKC,

“RITF PULSE FOR
CFC

wITh

SEF

THIS BIY

DATA

/1S BUFFER FULL YET?
/YES, GO GET THE CRC

aede

2051
2052
2853
2054

ADDRESS REGISTER

CLOTK

FOR

/WAIT

BUFPFFR

2eleé

cude

122

MARK,

DATA

/INTO THE SECTOR

2017
2018

PAGE

% DATA MARK OR

/THIS ROUTINE FOLLOWS THE CISCOVERY OF

2016

9317

THE

<RITE

BACK

PULSE

SFCTOR

FO®

BUFFER

CELL

BITV

/END

THE

WRITF

PULSE

FOR

THE

/SET

BIT

COUNT

FOR

RIY

/WALIT

FOR

NOCPS

/PUT

CRC

FOR

1 ONG

BIT

SEP

LaST

BYTE

BIT

CRC

CLOCK

THE

CRC

GENERATOR

/INCREMENT

ANDN

TEST

BIT

COUNT

/NQOT

GEY

ANOTHER

DONE,

2e55

2256

2e37
2058
2059

2265
2eb66
2067

/RX@1

ceb9
2e72
2n71
2072

247

o« t2

2076

RUTATE

ccu?

2176

BER

cu73
ceTd
2ers
2n7T6

2877
2v78
2079

ce8p
28
2c8e
2083
2z8u
%8s
2786
2e87
8
20t
2r89
ceog

2091
2092
293
2294

2295
2296
2097
2e98
2399

2109
2121
2122
2123
2104
210%
2106
2107
2108
2129
2110
2111
2112

2252

/END

ARQUND

/SET

DEL

REG

SHIFT

DRY

RDY

QOF

STAT

BIT

STAY

ONE

FIRNMwARE

PaL1a

2e52
2253
2254

ge7a

ROTATE

22T

LCT

2255
2255
2257
2eéd
eebl
2262
22063
2264
2265
2266
2267

SHTFT

ZERO

FLAGO

2254
2275
reee
225%

2251

Fuy

2euds

COKTROLLER

/STATUS

SR7 T

2cué

FLOPPY

2068

STAT

Videa

DATA

BYT

O=FEB=T74

FLAG=S

93117

PAGE

12e3

ROTATE

ONE

JUuMP

ote

ZERD

/END

ARCUND

/SET

BIT

SHIFT

BITS

CRC

TEST

STAT

372

2122

2eebd
2974
P22e
226h

ot
4

SR7

ROTATE

ZERO

JUMP

RaTe

ROTATE

crT3
2124

ICT
BR

2es7

227
2e71

2070
2357

=16=1

22’2
2273

a13e

23ed

2274

ONE

COFL

DCRCER

/1S THIS CRC RIT 0K
/NO, GO REPGRT DPATA

CRC

ERROR

eesa

CRC

/YES,

CRC

BIT

227%
2276
22717

neTd

g1e4d

ICT
BR COFL

2272

23ee

P74

ROTATE

23l

P64

2322
2333

221e

a23eu

pe76

2325

4064

LSP

/PUT

2306
e3a7

€u70
peaa

LCT
KDCRCER

/ERROR CODE FOR CRC ERROR

231¢
2311

az2ee

JUMP

2619

GQERDN

LCT

1doe

DCRCER,

CRC16

ONE

ZERC

COUNTE®

BRING

/INCREMENT

“MEXT

AND TEST B8I7 COQUNTER
ANOTHER

/G0

CHECK

/CRC

WAS

GOOD,

LSP

/PUT

THE

STAT!!S

JUMP F2
OKDONE

JEXIT

RCTATE

ZERD

ONE

/INSERT
THE

FOR

CLR

CRC

ERR

WORD BACK

BIT

INTO
STAT

CRC

ERROR

WNRD

BACK

STAT

IN SCRATCHPAD

DONE

BITV

IN SK

PAL1O

/JRXBL FLOPPY CONTROLLER FIRMWARE
w

9=FEB=76

2118

wAITRN, OPEN RTNB
LSR
LSP

2312
2313
2314

02264
2078
o264

2123

2315

epee

e317

0240

2132
2131

2322
2323

02715
Qcoa

2133
2134
2135

2324
2325
2320
2327
233e
2331
2332
2333

(3@
2347
1302
2347
a3e2
2347
2302
2347

WBR RUN
GOTRUN
WBR RUN
GOTRUN
WHBR RUN
GGTRUN
«BR RUN
GOTRUN

2334
2335
2336
2337

2071
9273
2124
2322

ESP
1CcT
BR COFL F
BACK

ZINCREMENT

/46MS

NOT

234¢

2252

OPEN TEMPE

/TIME

IS EXPIPEN

FOR

2316

2126

212%

2126

232v
2321

2127
2128

2129

2132

2136
2137

2138
2139
2140
213

2102
21463
2144
214s
2146
2187

BR RUN T

/60T RUN?

OPEN TEMPC

/PRESET

LSR
LSP

/RESTORE LOOP CNOUNT

GOTRUN

2347

LCT
2

2070
cede
BACK,

2343
2348

peod
206

LSP
UNMD

2153

2305

ony2e

BR RUN F

/WAIT

2155
2156
2is?

2347

ete

CLR

/1F

235¢
2351

2204
@213

2346

2154

2158
2159

2162
21061

FLOPPY

ANP

TEST

ELAPSED

2345

GOTRUM,

XREQ

OPEN RTAB
JUMP IND F2

CONTROLLER

FIRMWARE

PAL1D

2352

0reve

2353

22%2

R3ISL
2355

Pu7S
(e2u

2173

2357

22272

LCcv

217%
2176
2177

236

2128

2let

0elrs

125
QECIMAL
LSR

2101

2364

2062

FLAG ON

2183

2366

237}

2171

2172

217a

2178
2179

218
2182
2184

2165

2i8e¢

2356

2302
2363
236%
2367

237

(pen

252
(C6u
(C1i7e

RFSPONSE

/RETURN

FROM

WATTRUN

vigea

9=FEB=T74

LCT

/LCGAD RS

oCTAL

WITH

XFREQ

SUBROUTINE

9117

PAGE

TFEST PATTERN 252

/LOAD RI® wWITH TEST PATTERN

cCTaL

{25

CPEN R12
LSP
BR

o*3

FLAGO T
F2

/SET FLAG AND TEST

JuMp

INTER]Y

/FLAG FAILURE
/CONTENTS

2224
T}
22718

OPEN RS
ESP
LSR

2191
2192

2374
2375

2212
1351

JUMP F2
TESTY

/G0 CONTINUE

2376
2377

2¢ged
oQoce

e
a

/0PEN
/OPEN

219%
2196

NECESSARY

LSP

2371
23712
2373

2193
219a

252
DECIMAL
LSR
OPEN RS

2187
2188
2189

219¢

CLEAR THE SOFT HWDLD BIT AND UNLOAD THE HEAD

CONT,]

1374

(45,8 MS),

WAS

JCONTINUATION OF THE INITIALIZE SELF TEST
.

2167
2168
2169
2170

COUNT

YEY

FOREVER

/Z(ROUTINES

TEST,

INITIALIZE

RUN

RUN.,

3163
1646

2166

LOOP

LSR

09¢7S

2162

216%

2150
2151

2152

23uy

2342

COUNTER

/TIME WHILE WAITING FOR FUN

21468

2169

LOOP

ICcTY

2273

/STASH THE RETUPN ADDRESS

2119
23122
2121

2122

PAGE

ELAPSES, THE HEAD I8 UNLOADEOD
RETURN ADDRESS 18 PASSED

/VvIA THE COUNTER

2116

/RXEY

9117

/2 [SUBROUTINES ®WAIT FOR RUN]
IF 46MS
/THIS SUBROUTINE WILL WAIT FOR RUN,
JAND THE ROUTINE CONTINUES WAITING FOR RUN,

2113
ét1e
e11s
117

vViaza

1IT

OF RS 10 SR,

TNIT

TEST

SHOULD BE 252

IN FLD 2

/RXA1

FLOPPY

CONTROLLER

FIRMwWARE

PAL1O

VidaA

9=FEB=76

/[SUBROUTINEs MAGNITUDE COMPARISON]
/THIS SUBROQUTINE COMPARES THE EIGHT

2197

2198
2199
22089
eeel
eene

EXIT

/1F F>G,
/THE END

TO THE RETURN ADDRESS

RETURN

SUBROUTINE

THE

RTNA+4,

BTIT

9117

PAGE

NUMBERS IN REGISTERS F AND G
IF FeG, RETURN I8 TO RTNAes2,

IF Fs=G,

CONTENTS

OF F

AND

ARE

UNDEFINED

2203
22ed
2205
2206
2ee?
2208
2209
2210
2211
221e
221l
2al4
2eis
2216
2217
2218
eel9
caep
222}
2eee
2eel
2e2d
2ees
2226
cazal
caze
2229
2239
223l
2232
2233

ee3d
2235
2236
2237
2238
2el9
2249
2241
2242
2243

OPEN

MAGCOM,

2406

p23e

euny
eupe

2079

LCT

0367

wBw|

2403

2e7s

2424

pRed

LSR
LSP

2ues
24?7

0254
poT1
2875

2410
cutl

2129
2443

2d1e

8a76

ROTATE

2413

pee6d

LsP

edty
241s
2416

7260

2evy
2075

OPEN
ESP

2417
2uee

2129

2432

GLESSF

LT3}

eavty

euze

fo6d

edel
2uzd
2ugs
2u2s
2427

@23e
eary
ear3
cla4
a4de3

2406

TEMPA

BIT

/BIT

COUNT

/RESTORE

OPEN

TEMPF

ESP
L3R

/FOR

BR SR7 ZERO

ONE

BIT

/1TS

COUNT

/178

BRING UP

/RESTORE
TEMPG

/TEST

TSTGO

BIT

LSR

NEXTG,

SR7

ZERO

ROTATE

ZERO

LSP

LESS

/ITS

BRING

/RESTORE

OPEN

TEMPA

COFL

THAN F
NEXT

BIT

/INCREMENT

ESP
ICcTY
BR

/TEST G
/178 @,

AND

TEST

BIT

COUNT

MAGCOM+3

/G0 COMPARE

aule

eeva

OPEN

RTHNA

e43]

0233

JUMP

eLl2
2433

2273
227}

OPEN

RTNA

/ALL

BITS

ANOTHER BIT

COMPARED,

DIFFERENCE

IND

2244
o

2245
224ae
2247

2248

2249
2250
2251

2434
241%

2436
2ul7

244

GLESSF,

2073
o073
2273
£e73
0375

2293
2254
2259

2256
2257
22%8

2259

2260
226}
2282
2263
e264
2265
2260
2267
2268
2269
227e
2evl

esa)
esae
2wal

2074

2444

aeéa

Lse

24a4as

2293

2294
229%

2296
2297

2298
2299
23o0
23oy
2302
2303
2394
2305
2306

Fa2

ROTATE

TSTG2,

OPEN

ESP
LSR

2u5
245y

21eed

au2})

CEXTG

24y
2453
eusS4a
245%

ceve
227y
2226
2436

OPEN

2aa?

ezre
8250

THAN

RETURN

TO RTNA

¢4

ZERO

SR7

ZERO

9=FEB=T74

wAS

9117

PAGE

BRIVG

B1T

RTNA

FIND TRACK

LCY

LESS

BRING

THAN F,

RETURN

BIT

TO RTNA

CONT,)
/HOKE

FOUND BEFNRE

LAST

STEP

TAKEN

JUMP F§
GOERDON

2610

/[SUBROUTINE: ODIFFERENCE]
/THIS SUBROUTINE COHPUTES THE DIFFERENCE RETWEEN TWO EIGHT
/NUMBERS, ENTER wITH THE RETURN ADDRESS IN RTYN, A IN THE
ZCOUNTER AND B IN THE SHIFY REGISTER, EYIT IS MADE WITH THE

/COMPLIMENT

JEXIT

YO RTN

THE

ODIFFERENCE

A>»sB,

EXIT

THE

SHYFT

TO RTVN+2

2462

2230

2uel
2464

2126

2501

DIFB

/HAS A REACHEDTM
/YES, GO GET B

246S
2466
2467

0R6y

eers
eary

LsP
LSR
ESP

/NO, GET B
/4 INTD SHIFT RFG
/78 INTO COUNTER

2472
2471

2126
25e3

2472
2473
2474
2475

eer3

ICY

2o64

LSP
LSR
ESP

2a7s

¢2

KHOMERR

ea2eé

2e71l

15-}

/TEST 6
/RATCHS

Ese
JuMP FS
GLESSF+4

HOMERR,

viuega

IND

TENPG

ZiSUBRCUTINES

euSe
2457
2460
eueél

LESS

/RESTORE F

debv

2etre

2278
2279
e28P
2281
228
2283
2284
228s%
228és
2287
2288
2eé9
2290
2291
2292

L5P
JJHP

2271
eers

ec’l

e27a
ee’s
2276
2217

PALLC

364
¢eed

2436

ICT
ICY
LSR

/RX2) FLOPPY COANTHOLLER FIRMAARE
2252

Ese
ICY
ICY

OIF,

OPEN

TEHMPA

COFL

COFL
DIFaA

ac<B

/OPEN TEMPORARY PATH THRU

/HAS B REACHED
/YES, GO GET A

/INCREMENT
/¢
/B
/A

ALL
FOR

BRING BACK A
INTO SHIFT REG
INTO COUNTER

THE

ONE3S YET?
THE DIFFERENCE

ONES YET?
THE DIFFERENCE

BIT

IRX0Y) FLCPPY COLTHOLLER FIRMaARE
2307
23C0
2309
2310
2311

2312

313
€514
231%
e3leo

asn?
2318

2319
2320

2876
2877

o773
caee

esce

2ae3

25¢1
25¢2

0273
c203

2503
2526

25¢%
250e

2527

2321
2322
2323
e3aa
232%
2326
2327
2328
2329

esie
es11

2512
es13
es1e

Ty
0ers

2344

2345
2346
2347

¢!

JEXIT A>z9

18 TrE COMPLEXENT CF THE DIFFCRENCE

0IFa,

OPEN RTNA

IS THE COMPLYMENT CF THE OIFFERENCE

ICY
ICY

LspP
LSR
ESP
LSP
LSR

pees
2275

2273

Qoba

2975

/7THIS

CHECKS

251%
251¢

2270
n3S7

2517

2132

e52v

254e

HCRCER

2%21

2273

ICY

2522

e254

CRC

CKHCRC,

Lecr
=1b=}
BR

CRC16

OPEN
ESP
LSR

25130
2531

2532
2533
2534
253%

FLOPPY

027¢
@372
ee’4
3273
2124
2532

CONTROLLER

ONE

CRC,

AND

THE

COFL

RFESULTS

THE

TRACK

ROTATE

ZERO

ICT
BR COFL

FIRMWARE

PALtO

OPEN

RTNA

02e7

JUMP

254e

2072
0150

TKSKER,

0226

JUMP

2012

GOERDN

2070

KHCRCER

LSR

2581

gers
ge1ro
guéu

2383
2384

2553
2554

e2es

JUMP

2557

BADHDR

23389
2390
2391

2555
2556

0176

251
2572
2573
2573

2575
2576
2377

BDSRY,

BADMDR,

CRC

WAS

BIT

BIY

GOOD,

CHECK

BIT

TRK

COMP

ROTATING?

Videaa

9=FEB=T75

/YESy

4AS

THERE

BAD

REPORT

/CORRECT

TRACK,

EXIT

COMPARE

TRACK

SEEK

FROM

PAGE

153

ERROR

FIND

HDR

SUBR

CRC

/GO

/BAD

OPEN TEMPA
X1
ICY
LSR

NONE

TO ERROR

FLAGO

TRY

NOT

CORRECY

ERROR
ANOTHFER

START

/1DAM,

wWAS

HEADER

DATA

AM OR

1IDaANM?

INCREMENT AND TEST OAD CTARY

INNER CCUNT

PTRYAG

OPEN
X1

9117

/LOG THE

TEMPB

/NO CVERFLOw, C? TRY ANOTHER HELPER
- /INCRERENT AN? TEST BAD START CUTER CCUNY

ICT

B8R

COFL

PTRYAG

XSTRYS,

LCT
KXSYRYS

g226
2612

JuMP

0064

/YESy

ERREG

2162

124
2617

CNTR

BITS TESTEN?
BRANCH BiCX

/HEADER

LSP
&R CCOFL

2234

2604
269S

CRC

BADOAM

26195

023a

/EXIT

Lcr

OPEN

@264
0424

ecr1
ce73
eer5

/BRING UP

BIT

/HEADER CRC wWAS GOOD BUT TRACK
/ADDRESS OID NOT COMPARE, MUST

L.SP

ep7y
2073
e27s

20¢0
c621
26

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HCRCER,

2577

2274
2273
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2615
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SO FAR,

InD

2140

2965
2%606
2567
2570

AGAIN

GOON

/YES,

KTKSKER

2547
2552
2551
2552

2398

CNE

LcY

2s4ué

2564

AND TRY

/NO

aeed

2397

16 FOR CRC

CRC

/DONE

254¢
2541

023¢

BR SR7
TKSKER

es6e
2561
2962
2563

ZERO

LOG ERROR

/ROTATE

LCT

254g

2957

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CRC

COUMT

aje}

122

23192
2393
2394
2395
2396

BIT

/ALL
/NO,

ERREG

2536
2537

2543
2544
2545

/PRESET

/NQ,

ZERO

e21e
2271
aA07S

29526
2527

2637
2s08
2609
20190
241t
2481
241}
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cats
24106

CONT,)

THME

/YES,

2525

24836

A<B

/AND SECYOR COMPARISOAS,

2351

2002
2493
eLce
2605

JEXIT

FIND HEADER

24c?
Lo

InND

ROUTINE

2399

A AGAIN

/RESTCRE RETUAN ADDRESS YO SCRATCHPAD AKD A TO ER

JuMP

€203

TO TESY

/INCREMENT THF QETURN ADORECS 6BY 2

2517

2385
23486
2387
2388

/G0 BaCX

2.1

/(HCUTINES

2350

JuNP FO IND

n124

2382

13e2

CPEN RTNA

2523

2362
2363
2364
2365
2366
2367
2368
2369
370
23714
2372
2373
2374
237%
2376
2377
2378
2379
2380

PAGE

DIFB,

25ed

/RX@1

9:17

/INCRENENT A

2348
2349

2352
2353
2354
2355
2356
2357
2358
2359
2360
236y

Q=FEQ=TA

) (o §
JUMP FS
O1F e}

c273

2330

2331
2332
2333
2334
2335
2336
2337
338
2339
23ap
234}
2342
2343

viega

PALLIO

/NO OVERFLOw,

G TRY

ACAIN

/700 HANY TRIES FOR A KCZADER

FS§

GOERDN

8ADDAY,

OPEN TEMPS
Ese

/7BAD START

ON DATA AM,

IKIREKINT

AND TCOTY CaD CTLRT CCUuNY

1CY
LSR

LSP
6R COFL F
PGETDA

/NO OVERFLOwW GO TRY FCR DATYA AM aCAIN

/RXQ1

FLOPPY

CONTROLLER

FIRMWARE

PAL1D

vides

9=FEB=74

917

2417

2626

geve

cita
2419
240
L T3]
2422
2423

2607
cole
eoll
eol1e
2613
614

2170
g2t12
@2o7s
Ayeu
0212
1020

2615

p2te

PTRYAG,

JUuMP F3

ZPOINTER

TO FIND

2617
262n

0216
144y

PGETDA,

JuMP F3
GETDAM

/POINTER

TO FIN® DATA

2621
2622
2623
2624

0372
@n3e
Q226
261¢

625
eb2e
2627

pg7e
1774
Q226

2630

264@

2424

2425

2uzeé

2616

1413

NODAM,

LCT

/TRIED

KNQDAM
OPEN ERREG
LSR
LSP
JuMP F2
ERDONE

GOERON,

TRYAGN

IMES

FOR

DATA

AM,

PAGE
FLAG

15=4

THE

ERROR

IDAM

2uz27

2428
2429
243e
243y

2432
2433
2434

2435
2436
2437
2438
2439
2440
2441
2442
2443
244y

24uUS

2631

2g7¢

2446
2447
cUus
2449

g63a
2633
2634
2635

2779
W274
9p7s
pPghd

/[ROUTINESD

INITIALIZE

WRONG,

- LCT
KaRUONG
JUMP FS5
GUERDN

DNRCAL,

/HOME

wWAS

LCT
PNORDY
JUMP FS

/7CALL

JHECK

LCT

/DRV

GCREAD
OPEN RTHN
LSR
LSP

/MOVE
/PICK

INTRDY,

2636

9292

JUMP

2637

2252

ROOT

2452
2453%
2454
2459

CONTROLLER

2use6

2469

/10

THE

1§ REAMY
TO
UP

Vidza

RETURN

THE
ADDRESS,
READY

RETURN

2e6y

p274

vig75

CHXKRDY,

OPEN

LSR

RTN

/SAVE

RETURN

CNTR

FOR

INDEX

PASS

4pTQ

LCT

03758

L T-LDY

2645

f230

OPEN

Pa76

2éde

2477

2575

2647

2064

2652

@@61

FLAG

2651

@e4d2

LOHD

/T0

CLEAR

2652
2653

a¢ve
0369

LCT
~]Se]

/ZFCR

2654
2655
2eS6

Q2234
@@71s

2657

Qc7e

248s

2503

2504
2505
2506

esaTt

2508
2509
2510

THE

AND

2662

NEWPAS,

TEMPA

LSR

CPEN
LSR

Qoo

OFF

ADNRESS

TNDEX

INDEX

COUNT

COUNT
PASS

COUAT

wINDOW

INDEX

TIMES

/RESTORE

PASS

FLOP

THROUGH

OQUTER

10OMS

LOOP

COUNT

LSP

LCT

0327

/FOR 4@ TIMES TYROUGH ,25MS LOOP

T LR

@242
ap7Ts
Bped

cbbu
2665
2666
2667
672
267y

2p70
Q@S
Q116
2714
oevs
@124

2672

2666

2673
2674

p2de
@a7vy

OPEN
ESP

2676
2677

@124
2662

BR COFL
SPBACK

Q@73

/FOR

/CLOSE

TEMPB

2661
ebse
2663

2675

/JRESTOURE

LSP

STOLY,

CPEN
LSR
Lse

SPBACK,
_

)

TEMPC
/RESTORE

LCT
w2503=1
BR INDX
SAWIND
ICcT
RR COFL

/WALIT
’

/7FOUND

INNEPR

.25

COUNT

FOP

INDEX

ICT

TEMPC

/INCREMENT

ANM

TEST

18@

SEE

MS,
RETURN
NOT READY RETURN IS
RETURN ADDRESS PLUS 2

LSeP

2478

249t
2492
2493
2494
2495
2496
2497
2498
2499
25e@
2521
2502

(S8

/
264

ROUTINE

PULSES TS BETWEEN
CCUNTER BEFORF ENTRY,

ebdd

24U8¢

9317

INDEX

2643

2U90Q

TO READ

SELECTED DRIVE TO SEE IF THE
TO SPEED,
TWIS 1S DONE BY CHECKING

2472
2473

2486
2487
cu8s

SUBROUTINE

2u71

24178
2479
2480
2481
2u82
2483
248U

PAGE

Qupsed

247y

BOOT

THEN

OmFEB=T7/.

26d2

24782

CALL

TRACK 1,
SECTOR 1

CHECKREADY]

INTERVAL BETwWEEN
/ADDRESS IS PLACED IN

cUb2

FLY-Y:

PALLR

/THE

2461

2463
eu6d
2465
2U66
2467

FIRMWARE

/SUBROUTINE TO CHECK THE
/DISK 1S INSERTED AND UP

2u6n

SUBROUTINE

/{SUBROUTINEY

24us7
2uss
2459

REANY

CHKRDY

2450

FLOFPY

FOUND WHILE STEPPING OUT

2451

/RXPY

CONT,)

INNER

COUNT

/RXQ1

FLOPPY

2511
2512
2513
2514
2515
2516
2517
25148
2519
2520
2521
2522
2523
2524
2525
2526

CONTROLLER

FIRMWARE

PALLO

27ee
e7vl
2792
2703
2724

2655

COFL
STDOLY+1

27¢5
2706

2176
are7

UNRDY

2707

goas6e

2712
271t

2070

e712
2713

f234
2071
0873

ESP

n124

OPEN

TEMPB

V142A

9=FEB=Th

PAGE

9117

/INCREMENT

ANDP

TEST

OUTER

/WAS

INCEX

WIYDOW

/YES,

"FLAG ON

/NU,

OPEN

LCT

/FOR
/THE

3 TIMES THROUGH
WINDOW IS 3@ MS

JUMP FS§
STDLY

/G0

16w}

COUNT

ICT

FLAGO

ONE

e374
peee

2654

INDEX

§80MS

WINDPQW

{@ MS
WIDE

LOOP

IWPEX

FOR

LOOK

OPEN?

<ITHIN

2527

2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2cuy
2s4e
2543
es4d
2545
2546

eT14
2715
2716
2717

0232
eery
eerl
e124
2646

SAWINC,

OPEN
Ese

TEMPA

COFL

2721
2lee2

2174

B8R

FLAGO

2767

UNRDY

2723
2724
2725
2726
2727

¢274

IPEN

geTy
2073

ESP
ICT
ICY
LSR
LSP

2720

073

JBT7S

a7
er7sS

2548
2549
255¢

LSR

2734

naTe

ROTAYE

2551

2735

2p61

FLAG

2553

273¢

eevo
6374

2554
2555
2556
2557
2558
255%

2737

27432

2741
2742
€743

/RXQ1
2566
2567

ROT3,

2122
2745

OFF

LCT
w3=]
BR SR7

ONE

ICT
B COFL

2752
2751

w176

FIRMWARE

276@
274

otd

ROTATE

veeo

JUMP

2761

PaLLD

¢140

WRTEN

geee
e2eb

FLAG

JUrP

2736

ROT3

cl64

eecoed

2765
27¢te

227d

GPEN

RTN

2217

JUHP

CPEN

STAT

2775
2776

ecae

2777

INDEX

OCC''RRED

ADDRESS

CRV

WAS

TOO

RDY

RIT

THE

WINDOW

SOON

BETWEEN

150

SECOND

STAT

AMD

OPEN?

180

EXCHRY,

UNRCY,

/FLAG

OFF

/END

ARQUND

/wAS

INNICATE

SHIFT

FIRST

INCREMENT

THE

PASS

BITS

FIRST

Vid42A

LAST

STAT

9=FEB=T74

PAGE

16=2

/UPDATE

9117

EXIT

WRITE

PROTECT

BIY

STAT

ONE

/GC

LSP

SHIFT

AROUND

/RESTORE

THE

/RETURN

FROM

LAST

BITS

STAT
CHKRDY

SUBROUTINE

IND

ESP
LSR
ROTATE

MS,

2761
2762
2763

2735

OCCLURRED

FOR

ZERQ

ROTLTE

ceece

INDEX

LOOK

eeTe

2774

/NG,

/LAST,

2760

27173

I'IDEX,

ZERD

FLAGO

2753

277}y
277¢

2ND

EXCHRY

g2y
e
¢e?s
2eT4

WAS

2764

2767
27718

/THIS

2752

275%
2756
2757

INDEX,

ROTATE

2754

COUNT

¢ave
2073
gred
2749

CONTROLLER

PASS

CNE

JUMP

FLOPPY

1ST

/SET

STAT

ROTATE

2747

2568
€569
2579
2571
2572
2573
2574
2579
2576
2517
2578
257s
258
2581
2582
2583
2584
2585
2586
2587
2588
2589
259y
2591
2592
2593
2594
2595
2596
2597

OPEN
ESP

geee6
2746

2744

INDEX

WAS

/YES,

pave

2745
2746

256¢
2561
2562
2563
2564
2565

TEST

/THIS

/RETURN

2731
2732
2733

2214

ZERO

RIN

eadbu

2552

AND

NEWPAS

e73a

2547

/INCREMENT

IcY

/CLEAR

DRV

READY

BIT

STAT

ZERO

JUMP FS
ROT3=1

/GO

ceen

e
%]

/0PEN

ecee

/0PEN

UPDATE

/0PEN

REST

STAT

QeFEB=TH

R]Lo -t--tb-tb

-t oki Lolo] -to3

-to8 -te-le

11111111
1111411}

s-t -e -le -tvd

1111811y

11811148

11111111

111 1111
114 1111

ISRURERE
11114011

1111t
11111111

1181111}
111114111

11111t

-t
>li-l
-

- vl- -tvt -to4

Vidza

adLl

edoe
2580

-tot -to=t vl-

Vid2A

9=FEB=76

oto Lol-t

p2ee
aioo

PALLO

wd -t

/RXQ03 FLOPPY CONTROLLER FIRMWARE

11114111

9117

- it— -te-te-t-

ISRRRRRE

ie Llo]-te ]Ll Llol

-l-y - -to

1111111
11111111

11111111
11111411

-lo=tLolol -yet-twi-lvy Lolol -tvd -t-l -tvt-te -4od-l-

-t -

el .- -t-y -tvt -—-t-t-y — -ty Llol-4e

s -t

-twd -te-tv-tv

Ll
o

2409
25080

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1111111}

s- -t

111ititt

—
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11111811
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3020
3100

3200
3300
Jape
3500

LYY
3702

J/RXEY

40080
410¢
42ep

4306
4q4o0Q

4500
a60¢

4700

S¢9@

5100
5200
5309
5400
5500
5600

5700

6ne2
6100

6200
6300
b40p

6500

66020
6700

7000
7100
7200
7300

T400
7500
7608

7700

FLOPPY

CONTRCLLER

FIRIUWARE

PALI

9317

PAGE

16=4

/RXD)

FLOPPY

CONTROLLER

2562

pede

PFUNCY

2764
1175
1110

PGETDA
PGOTIY

PAGE

16«5

2370
2617

WHCHDR
WRONG

1346
1771
1765
1105

WRTVS

1322

WRTCRC

0624

207S
FLY
31

EXCHRY

A3l44

AGAIN

FILLY

8531
8550
a722
1576
1616

FILLBU
FINDHD
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1400

PNTRDY

¥714

PROSEC

FINDTR

2103

FUNCT

PRTER®

1236
1857
1066
1276
2201
2221
1441
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2432

2503

PTRYACG
PUTSEC

2615
8145

PUTTRY

2166

XFRQ
X8§TRYS

1134
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READ

e712

READOw

AGAINS

1635

FUNCTZ

AGAING

1653

FUNCTUY

B
BACK
BADDAM
BADHDR
BADSRT
BBACK
BOSRT
BOOT

564
el3eed
2577
2557

204

FUNCTS
GETCMD
GETCRC
GETDAM
GETwWRD
GLESSF
GODONE
GODUN
GOERDN
GOREAD
GOTIT
GOTONE
GOTRUN
GOTHRD

2649

ep1o
2032
2347
2e7e

HCRCER

D730

2546

HKDRCOM

2515
21es

HESETL
HLFDLY
HOMERR
ILTRK
InLQ
INTER1
INTRDY
LOOP

1673

2554

2555
Aas2

BYTEOQU
C

1152
e615

CBACK

PS7e
P676
2351

CEGATE
CFINSE
CHKPAR
CHKRDY
CHKSEC
CKHCRC

CKHOME
CLRID
ChGATE
D

1243
geoéo

2653
1675
pued
2206

DAM

DAMSUP
DATA
DATAA

PNORDY

PYSRDY

RCALQOx
RDERER
KDSEC
RDSTATY

1272
2610

RECALTM
RECAL1

Q779

1251
2736
eri4
%43

2124

SELFER
SPBACK

06202

eu66

STASH

2456

STOLY
STDONE

1374
2631

MEWORD

1326
2400
14214
11d1

NEWPAS

2646

MEXTG

2421
2606

2662
0437
2654

1031
2100
3275
2ua7

2352

DBACK

DCRCER
CELAY

2304
132@

DELDAT

1727

NGDAM

DIFB

2u62
2503
25a1

NOGSTPS

@357

NCTYET

pLY25

2145

NCZEROQ

1755
1746

262s

TSTAGY
TSTGD

2165

MNUTHER
NXDRVE

2ald

TSTRTTM

Qo644

LDIF

1353
2443
peod
2134
2767
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DNRCAL

MAGCOM
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TESTDY

1372
1667
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TRKEQ

024de

TRYAGHTM

1413

2135

ANXDRVE

4270

a3as
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NXHDR

nT37

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1210

1761

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EMPTYR

11e7
1742
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OKDONE

cuT

1751
1006
21589

UUNE
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wWAIT

PDMRCL

N372

EnDDAM
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FLOPPY

CONTROLLER

DETECTED:

USED

SECONDS

FIKMWARE

PAL1O

rAITRN

WATDAT

Videe

1351

1350

TIMERR
THKSKER

DONDLY
DONSTP
DUNSTP
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9=FEBw=T74

puageo

o034
2355

STEPHN
STPOUT
SWGATF
TEST
TESTY
TESTR2

Q656

2167

1571
w322

vaas

WRTPST
CRTSEC

8706
2235

SECPLS

0206

0566

1275
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SAWIND
SECHLF

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1767

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2060

2571
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DIF
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CORE

ERTRK

9117

2535

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AGAINY

9eFEB=TA

vidgaa

ABV4Z

AGAINZ

ERRORS

PALLIO

ABACK

AGAIN]

/RXQ1

FIRMWARE

2141
0127

PT43

2312
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93117

PAGE

166

IS DRAWING AND SPECIFICATIONS, mm.mtm
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COPRGHT© 974

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DIGTAL EQUPHENT CORPOMATION

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UNLESS

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SUPPLYSCHEMATIC
POWER
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H771-A
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71-8 ar
B-DD-H771-A-1
1 D-CS-E7
D-CS-H771-C-1

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D-CS-5411398-0-1

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DIGITAL EQUIPMENT CORPORATION AND SHALL

OF BASIS FOR THE MANUFACTURE OR SALE OF
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AS
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NOT
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DIRECTQ RV

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TITLE

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TITLE

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sizefcooe

NUMBER

H771-#

REV
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“THIS LnAWING AND SPECIFICATIONS, HEREIN, ARE THE
TY

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v

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3. NO DOUBLE CRIMPS ARE ALLOWED IN

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CUSTOMER PRINT SET INDEX
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REFER TO

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DIRECTORY
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NOT BE REPRODUCED
OR COPIED OR USED IN WHOLE
ITEMS WITHOUT WRITTEN PERMISSION. COPYRIGHT

THIS IS PRINT SET [TTT)
—

IATIONS

TITLE

7013503=@

|COOLING UNIT FOR DUAL RX@1 115V

7013503-1
7013503-2

|COOLING UNIT FOR DUAL RX@l 230V
|COOLING UNIT FOR SINGLE RX@1 115V

7013503-3
7013503=4

|COOLING UNIT FOR SINGLE RX#1 2301
[7013503-0 W/O PACKAGING

7013503=5

|7013503-1 W/O PACKAGING

7013503-7

|7013503=3 W/O PACKAGING

7013503=6

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CHG. NO

RXQ 1
REVISIONS

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FIELD

|7013503-2 W/O PACKAGING

DATE

;

PRINT SET

VAR

PRINT SET

IN PART AS THE BASIS FOR THE MANUFACTURE
OR SALE OF
1976 , DIGITAL EQUIPMENT CORPORATION"

TITLE

DATE
/’ 3 7‘
A

RX@1 PLENUM/FAN
ASSYO
8IZE|CODE

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FOR

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B-DD-11/03-0
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IFICATIONS, HEREIN, ARE THE
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. THE
SALE
BASIS FOR THE MANUFACTURE

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" TOIITAL EQUIPMENT CORPORATION"

Wll_L. BE
THIS N\ODU.LE UTILIZATION
11//03-SF, 1i/03-SC

BE
THIS NODULE UTILIZATION WILL
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NMOS

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DESCRIPTION

UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES
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KD!I-HA AND KEVI|

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DIGITALEQUIPMENT CORPORATION
MAYNARD,

MADE BY [ F [ .

DATE
ENG

25 Ao
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QUANTITY /VARIATION

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101

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DOUBLE

HEIGHT PROCESSOR WITII NO

NOTE:

This

RAM

-1

=11

is a reference document only,

Tisting processor variations covered by the

11/03 Field Maintenace Print Set.
detailed

For more

information, refer to individual

option prints.

TITLE

ASSY NO.

11/03 Processor Variation List
DEC FORM DEC 16-(325)—1031-N870
DRA 110

50D~ 11/03-0
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DATE

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DATE

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DATE

A-PS-9905812-0-0

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CHIP

BOX,PAPER

SET-uUP

23003B5

WITH

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NOT AVAILABLE,

23091A5-01.

MICROM EIS , FIS OPTION

DEC FORM DEC 16—(32
5)_1031_N370

MICROM MOS

USE

\O-\G75"

DESCRIPTION

DRA 110

[ISSUED SECT

Bo—CHIE

| 23003B5

TITLE

9/8/75

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SECTION

PROD oA e corme

No.| DWG NO./ PART NO.
2

p. praiy

DATE

ASSY

NO.

BHEET

NONE
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CODE

A |PL

[osrn]

NUMBER

KEV11-@-g

REV.

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100005

711

—-

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EQUIPMENT

DRAWING

CORPORATION
MAYTMARD

»aRhtaCmustvry

SEQUENCE