IBM 5150 PC Technical Reference (6025005, August, 1981) (PDF)

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