IBM 5150 Technical Reference page 98

Address Interrupt
(Hex)
Number Name BIOS Entry
0-3
o
Divide by Zero D EOI
4-7
1
Single Step
D-EOI
8-B
2
Nonmaskable
NMI INT
C-F
3
Breakpoint
D EOI
10-13
4
Overflow
D-EOI
14-17 5
Print Screen
PRINT SCREEN
18-1 B
6
Reserved D
EoT
1D-1F
7
Reserved
D-EOI
20-23
8
Time of Day TIMER INT
24-27
9
Keyboard KB INT
28-2B
A Reserved D
EO!
2C-2F
B
Communications
D-EOI
30-33
C
Communications
D-EOI
34-37
D Disk D EOI
38-3B
E Diskette DISK INT
3C-3F
F
Printer
D EOI
40-43
10
Video VIDEO 10
44-47
11
Equipment Check EQUIPMENT
48-4B
12
Memory
MEMORY SIZE
DETERMINE
4C-4F 13
Diskette/Disk DISKETTE 10
50-53 14
Communications
RS232
10
54-57 15
Cassette CASSETTE 10
58-5B 16
Keyboard KEYBOARD 10
5C-5F
17
Printer PRINTER
iO
60-63
18
Resident BASIC
F600:0000
64-67 19
Bootstrap BOOT STRAP
68-6B
1A Time of Day
TIME-OF DAY
6C-6F 1B
Keyboard Break DUMMY RETURN
70-73 1C
Timer Tick
DUMMY-RETURN
74-77
1D
Video Initialization VIDEO PARMS
78-7B
1E Diskette Parameters DISK BASE
7C-7F 1F
Video Graphics Characters
o ­
100-103 40
Diskette pointer save
area for Fixed Disk
104-107 41
Fixed Disk Parameters FD
TBl
168-16B
5A Cluster
DOOO:XXXX
16C-16F 5B
Used by Cluster Program N/A
180-19F
60-67
Reserved for User Proarams
N/A
8088 Software Interrupt Listing
System BIOS 5-5