IBM 5150 - Page 271

LOC OBJ
LINE SOURCE
FEBS 833E6E0018 5715
CMP TIMER_HIGH.DISH ~ TEST FOR COUNT EQUALLING 24 HOURS
FEBD 7519
5716
JHZ T5
FEBF 813E6C008000 5717
CMP
TIMER_LOW,oaOH
FEes 7511
5718 JHZ T5
5719
5720 1------ TINER HAS GONE 24 HOURS
5721
FEe7 C7066EOOOOOO
5722 MOV TIMER_HIGH J 0
FEeD C7066COOOOOO
5123
MOV
TIMER_LOW. 0
FED3 C606700001
572:4
MOV
TIMER_OFl.l
5725
5726 ;------ TEST FOR DISKETTE TIME OlIT
5727
FEDS
5728
TS: ; DISKETTE_CTL
FEDe FEOE4000
5729
DEC MOTOR_COUNT
FEOC 7508 5730 JHZ
T.
; RETURN IF COUNT NOT OUT
FEDE 80263FOOFO
5731 AND HOTOR_STATUS,OFOH TURN OFF MOTOR RUNNING 8ITS
FEEl BoDe
5732
MOV
AL.OCH
FEES
SAFlO]
5733 MOV
DX.03F2H
FOC en PORT
FEEB EE 5734 0I1T DX,AL
I TURN OFF THE MOTOR
5735
FEE9
5736
16: TIMER_RET:
FEE9 COle
5737
INT
IC"
TRANSFER CONTROL TO ... USER ROUTINE
FEEB B020
5738 MOV
Al,EOI
FEED E620 5739 OUT 020H,Al END OF INTERRUPT TO 8259
HEr SA 5740 POP
OX
FEFO 58 5741
POP
AX
fEFl IF
5742
POP
OS
RESET MACHINE STATE
FEF2 CF
5743 IRET RETURN FROM INTERRUPT
5744
TIMER_INT ENDP
5745 • -------------------------- ------------------
5746 ; THESE ARE THE VECTORS WHICH ARE MOVED INTO
5747 ; THE 6086 1HTEP.RUPT AREA DURING POWER ON
5748
,- ------- ---- --- ----- - ------------------ -----
FEF3 5749
VECTOR_TABLE LABEL WORD ; VECTOR TABLE FOR MOVE TO INTERRUPTS
5750
FEF3 ASH
5751
ow OFFSET TIMER_INT
; INTERRUPT 8
FEFS DOFD
5752 OW CODE
5753
FEF? 87E9 5754
OW
OFFSET KB_IHT
INTERRUPT 9'
FEF9 OOFO
5755
OW
CODE
5756
FEFS 00000000
5757
00
i INTERRUPT A
FEFf 00000000
5756 00
INTERRUPT B
FF03 00000000
5759
00
INTERRUPT
C
fF07 00000000
5760 00
INTERRUPT 0
5761
HOB 57EF
5762 ow OFFSET DISK_ItiT
INTERRUPT E
FFOO OOFO 5763 OW COOE
5764
FFOF 00000000
5765 00
INTERRUPT F
5766
FF13 65fO 5767 ow OFFSET VIDEO_IO
I INTERRUPT 10H
FF15 OOFO
5768
OW CODE
5769
FF1740F8 5770 ow OFFSET EQUIPMENT
; INTERRUPT
llH
FF19 DOFa 5711 ow CODE
5772
FFIB 41F8
5713 ow
OFFSET HEMORY _SIZE_DETERMINE
INT l2H
FFlO OOFO 5774
ow
CODE
5775
FFIF 59EC 5776 ow OFFSET DISKETTE_IO I INTERRUPT 13H
FF21 OOFO 5777
ow
CODE
5778
FF23 39E7 5779 ow OFFSET RS232_IO
; INTERRUPT
l4H
FFZS OOFO 5780
ow
CODE
5781
FF27 59F8 5782
ow OFFSET CASSETTE_IO
HITERRUPT
ISH
FF2:9 OOFO 5783 ow
CODE
5784
FFZB ZEES 5785 ow OFFSET KEYBOARD_IO
INTERRUPT 16H
FF20 DOFO 5786 ow
CODE
5787
FF2F 02EF 5788 ow
OFFSET PRINTER_IO
INTERRUPT
17H
FFll OOFO
5789
ow
CODE
5790
A-78