Specifications

20 80 MS- DOS Pro gram ter mi nate
21 84 MS- DOS DOS func tion call
22 88 MS- DOS Ter mi nate Ad dress
23 8C MS- DOS Ctrl- Break Ad dress
24 90 MS- DOS Fa tal Er ror Vec tor
25 94 MS- DOS Ab so lute disk read
26 98 MS- DOS Ab so lute disk write
27 9C MS- DOS Ter mi nate
28 A0 MS- DOS Idle Sig nal
29 A4 MS- DOS TTY out put
2A A8 MS- DOS MS- Net serv ices
2F BC MS- DOS Print Spool
30 C0 MS- DOS Long jump in ter face
33 CC MS- DOS Mouse func tions
3F FC MS- DOS Over lay in ter rupt
40 100 BIOS Floppy I/O when fixed disk
is pres ent
41 104 BIOS Fixed disk 1 pa rame ter ta ble
42 108 BIOS EGA Chain
43 10C BIOS EGA Pa rame ter ta ble pointer
44 110 BIOS EGA graph ics char ac ter font
4A 128 BIOS AT Alarm exit ad dress
50 140 BIOS AT Alarm in ter rupt
51 144 BIOS Mouse func tions
5A 168 NET Func tions
5B 16C NET Boot chain
5C 170 NET Net BIOS en try
67 19C MS- DOS EMS func tions
6D 1B4 VGA VGA Serv ice
70 1C0 Hard ware IRQ8 - Real Time clock
71 1C4 Hard ware IRQ9 - Re di rected IRQ2
72 1C8 Hard ware IRQ10 - Un as signed
73 1CC Hard ware IRQ11 - Un as signed
74 1D0 Hard ware IRQ12 - Un as signed
75 1D4 Hard ware IRQ13 - Un as signed
76 1D8 Hard ware IRQ14 - IDE Fixed Disk
77 1DC Hard ware IRQ15 - Un as signed
80 200
F0 3C0 Ba sic
F1 3C4
FF 3FC Not Used
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