IBM 5150 Technical Reference

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

IBM 5150 Specifications

General

Brand	IBM
Model	5150
Category	Desktop
Language	English