IBM 5150 - Printer Troubleshooting

- ---- ------- --- -----------------------
--------------------------------
LOC OBJ
E09E BBf5
EOAO BBFE
EOA2 7307
EOM 33C7
[DAb 7507
EOA8 Fa
EOA9 730
EDAB
EDAB DBC7
EOAD 740 I
EOAF F4
EOBO
ECBD BODO
EOB2 E6AO
EOB4 E683
EDBb 6099
E068 E663
EOBA BOFe
ECSt E661
EDbE 2ACO
EoeD BA0803
Eon EE
EOC4 FEeD
EOC6 5/..6803
Eoe9 EE
EOCA BBOOFD
EOCD 6EOO
EOCF 8600EO
ED02 8C16EO
EODS E93301
E008 7505
EOoA 8004
EOoC E608
EODE 6054
fOEO E643
EOE2 2BC9
EOE4 SAD9
EOE6 8ACl
EOE8 E641
EDEA
EOEA 8040
EOEC E643
EOEE E441
EOFO OAD8
EOF2 60fBFF
EDFS 7404
EOF7 ElF 1
EOF9 EBB4
EOFB
EoFB BAC3
EOFO 28e9
EOFF E641
EI01
E101 8040
EI03 E643
nos E441
EI07 2208
EI09 7404
EIOB E2F4
LINE SOURCE
"7
"8
30.
310
311
3"
313
3"
(9:
315
316
317 ERROl:
318 ; - - - - --
I TSTIA
;PATTER~~ MAKE IT THRU ALL REGS
;NO - GO TO ERR ROUTINE
; TSTlA
;ZERO PATTERN MAKE IT THRU?
;YES - GO TO tlEXT TEST
;HALT SYSTEM
CQlHAI!HNG POD AND BIOS.
lDISABlE HMI INTERRUPTS
; INITIALZE DMA PAGE REG
iSET 8255 A,C-INPUT,B-OUTPUT
;WRITE 8255 CMD/MOOE PEG
iOISABlE PARITY CI-IECKEPS ANO
; GATE S!<S SW5.CASS MOTOR OFf
i DISABLE COLOR VIDEO
;DISABLE B/W VIDEO.EH HIGH RES
; SETUP
SS SEG REG
iSETUP STARTItlG ROS AODR
iSETUP RETURN ADDRESS
;HALT SYSTEM
IF EPROR
TEST
TIIAT TIMER 1 FLr.1CTIONS OK.
CCUNT REGISTERS FOR All
HEMORY REFRESH.
,DISABLE DHA CONTROLLER
iSEL TIMER I,LSB,MODE 2
i
SET INITIAL TIMER CNT TO 0
;
TIMERI_BITS_ON
; LATCH TIMER 1 COUNT
iREAD TIMER I
COUNT
iAlL BITS ON IN TIMER
1 YES - SEE
IF ALL BITS GO OFF
;
TIMERl_BITS_OFF
J TIMER1_BITS_ON
iTIMER I FAILURE. HAlT SYS
i TIHERl_BITS_OFF
;SET TIMER 1 CNT
i TIMER_LOOP
i LATCH TIMER 1 COUNT
iREAD TIMER I COUNT
I-lRAP _DHA_REG
I
TIMER_lOOP
319 ;TEST.02
HOY
MOV
JNC
XQR
JNZ
eLe
J~~C
OR
JZ
HLT
SI,BP
OI.SI
C9
AX ,01
EPROI
C8
AX.DI
CI0
320 ROS CHECKSUM TEST I
3~1 jOESCRIPTIOtl
322 A CHECKSUM IS OCNE FOR THE 8K ROS NODULE
323 ; --------- ---
324
CIO:
325
HOV
326
OUT
327
OUT
".
HOV
"8
OUT
3"
tlOV
331 OUT
332 SUB
333
HOV
334 OUT
335 mc
336 f18V
337 CUT
338 flOV
33. MOV
340 MOV
341 MOV
342
JI1P
343
Cll;
JI
~ E
Al,O
OAOII,AL
83H.Al
Al.99H
CND_PORT ,AL
Al,orCH
popr_B.AL
AL,AL
DX,3DeH
OX,AL
"
ox,'368"
OX,Al
AX,COOE
55,AX
ElX,OEOOOH
SP,OFFSET Cl
ROS_CHECKSUM
ERROL
34"+ • - - - --- -- - - ------ -- -- ---- -- ------- -----------
3(6 iTESr.03
346 8237 ONA INITIALIZATION CHM1NEL R[GISTE.R
347 iDESCRIPTIOH
34~ DISABLE THE 8237 NIA cmnpOLLER. VERIFY
3-+9
;';~ITEIPEAD TI-IE CL:?RENT ADDRESS AHD WQRD
350 CHAlH1ElS. ItUTIl;lIZE A~;o STAPT DNA FOR
351 i ---- - --- --- -- --------- --- - - ----- --- ------- --
352 DISABLE DNA CONTROLLER
353
354
MOV
355
OUT
356
357 VERIFY
358
359
MOV
360 OUT
361 SUB
362
MOV
363 MOV
364 OUT
365
C12;
366
MO"
367
OUT
368
IN
36.
OR
370 CMP
371
JE
312 LOOP
373 JMP
374 C13:
375
MOV
376
SUB
377
OUT
378
C14:
379
110V
380
OUT
381 IN
382
AND
38'
JZ
384 LOOP
AL.04
DHA08.AL
THAT TIMER 1 FUNCTIONS OK
Al.54H
TIHER+3.AL
CX,CX
BL,CL
AL,CL
TINER+I,AL
AL,40H
TINER+3.AL
AL,TIMER+l
BL,Al
BL.OFFH
C13
el2
SHORT ERROl
AL,BL
CX,CX
TIMER+l.AL
Al.40H
TIMER+3.AL
AL, TIMER+l
BL,Al
CIS
C14
A-6