IBM 5150 Technical Reference page 161

LaC OBJ
LINE
SOURCE
EOCI E96ZFF
2715
JMP
JID
EDC4
2716 JlS:
EDC4 8AE5
2717
MOV AH,CH
EDC6 E87800
2718
CAll
NEC_OllTPlIT
EOC.9 8A6601 2719
MOV AH.IBP+l
J
EOCC £87200
2720
CALL
NEt_OUTPUT
EOCF 8AEI
2721 HOY AH,CL
EODI £86DOO
2722
CAlL
NEC_OUTPUT
EDOlt 880700
27Z3
HOY
BX,7
EDD7 [89200
2724
CALL
GET_PARH
EDDA 880900
2725
HOY BX.9
EDDD E88COO 2726 CALL
GET_PARM
EDEO 6B0600
2727
HOY eX.II
Eon E88600
2728 CAll
GET_PARH
EDE6 6eODOO
2729 HOY
BX.I!
EDE9
2730 JI6:
EDE9 E88000
2731
CAll
GET_PAR"
EDEC 5£
2732
POP
sr
2733
2734
2735 1----- LET THE OPERATION HAPPEN
2736
EO ED E84301
2737 CALL
WAIT_INT
EDFO
2736 J17:
EDFO 7245
2739
JC
J21
EDF2 E87401
2740
CALL
RESULTS
EDF5 723F
2741
JC
J2D
2742
2743 1----- CHECK THE RESULTS RETlmNED
BY
2744
EOF7 FC
2745
CLD
ED Fa BE4200
2746
HOY 51 ,OFFSET NEC_STATUS
EOFB AC
2747
LODS NEC_STATUS
EOFC 24CO 2748
AND AL,OCOH
EDFE 7438
2749
JZ J22
EEOO 3C40
2750 C!1P
AL.040H
EE02 7529
2751
JHZ
JIS
2752
2753
1----- ABNORHAL TERHINATIOt." FIND OUT
2754
EE04 AC
2755
LOOS NEC_STATUS
EE05 OOEO 2756
SAL
AL,!
EE07 B404
2757
HOY
AH,RECORO_NOTJND
EE09 7224
2758
JC
J I '
EEOB ODED
2759
SAL AL.l
EEOD DOEO
2760
SAL
AL,I
EEOF B410
2761 HOY
AH.BAD_CRC
EEll 721C 2762
JC
J I '
EE13 OOEO
2763
SAL AL.l
EElS B408
2764
MOV
AH,BAD_DMA
EEl7 7216
2765
JC
JI'
EE19 OOEO 2766
SAL AL,l
EEIB OOEO 2767
SAL AL.l
EEtO B404
2768
MOV AN .RECORD_NOT_FND
EE IF 720E 2769
JC
J I '
EE21 OOEO 2770
SAL
AL.l
EE23 8403
2771 HOY AN .WRITE_PROTECT
EE25
7208
2772 JC
JI'
EEZ7 ODED
2773 SAL AL.l
EE29 8402 2774 HOY
"'H, S"'O_"'DDR_HARK
EEtS 7202
2775
JC
JI,
2776
2777 1----- NEC MUST HAVE F...ILED
2778
EE20 2779 J18:
EE20 6420
2780 MOV AH.B...D_NEC
EE2F 2781
J19:
EE2F 08264100 2782 OR DISKETTE_STATUS .... H
EEl3 E87801 2783 CALL NUM_TRANS
EEl6 2784 J20:
EE36 C3
2785
RET
EEl7 2786
J21:
EEn E82FOl 2787 CALL RESULTS
EnA C3
2788
RET
2789
2790 1----- OPERATION WAS SUCCESSFUL
2791
; IF SO, HANDLE SPECIAL
I CYLINDER tu1BER
l HEAD HUMBER FROH STACK
J
SECTOR HLlMBER
I BYTES/SECTOR PARH FRCH BLOCK
I
TO THE NEt
J EDT PAR'" FRCH BlOCK
TO THE NEt
.
I GAP LENGTH PARH FRCH BLOCK
;
TO THE NEC
I
on
PARH FRCH BLOCK
I RW_OPN_FINISH
.
TO THE NEe
, CAN NOW DISCARD THAT DUHMY
I RETURN ADDRESS
I WAIT FOR THE INTERRUPT
I HOTOR_OFF
I LOOK FOR ERROR
; GET THE NEC STATUS
; LOOK FOR ERROR
THE CONTROLLER
I SET THE CORRECT DIRECTION
I POINT TO STATUS FIELD
I GET STO
I TEST FOR NORM"'L TERMINATION
I OPN_OK
; TEST FOR ABNORMAL TERMINATION
I NOT ABNORH"'L, BAD NEC
WHY
; GET STl
; TEST FOR EaT FOlHl
I RN_FAIl
I TEST FOR CRC ERROR
I Rw..FAIl
I TEST FOR DHA OVERRUN
I RWJAIL
I TEST FOR RECORD NOT FOlN)
I RN.,FAIL
I TEST FOR WRITE_PROTECT
t RWJAIL
; TEST HISSING ADDRESS MARK
I RWJAIL
; RN-NEC-FAIL
I RN-FAIL
I HOW HANY WERE REALLY TR...NSFERRED
J RN_ERR
I RETURN TO CALLER
I RW_ERR_RES
I flUSH THE RESULTS BUFFER
5-68 System BIOS