IBM 5150 Hardware Reference Manual

APPENDIX A
~ ROM BIOS LISTINGS
CONTENTS
ITEM
Equates and Data Areas
Power-on Self-test
Boot Strap Loader
r""\
I/O Support
Asynchronous
Communications
(RS 232)
I/O
Keyboard
I/O
Diskette
I/O
Printer
I/O
Display (VIDEO)
I/O
Cassette
I/O
System Configuration Analysis
Memory-Size-
Determination
Equipment-
Determination
(Options)
~
Graphics-Character Generator
Time-of-day
Print Screen
Notes for the BIOS Listing
LINE
NUMBER
1
198
1355
1410
1640
2255
3007
3119
4977
4903
4933
5503
5642
5817
ADDRESS PAGE
A-2
E016
A-4
E6F2
A-20
E729 A-20
E82E A-23
EC59 A-32
EFD2
A-42
F045 A-43
F859
A-68
F841 A-67
F84D A-67
FA6E
A-75
FE6E
A-77
FF53 A-79
.
A-81
A-I

IBM 5150 Specifications

General

Processor	Intel 8088
Clock Speed	4.77 MHz
RAM	16 KB - 256 KB
Manufacturer	IBM
Model	5150
Release Year	1981
Storage	5.25-inch floppy drives
Graphics	MDA or CGA
Operating System	IBM PC DOS
Ports	Cassette, keyboard
Expansion Slots	5