IBM 5150 Technical Reference

Primary (Input) ........................... 3-5
Secondary (Output)
....................... 3-5
Power Good Signal
............................ 3-6
Power Supply Connectors and Pin Assignments
...... 3-6
SECTION 4. KEYBOARD
......................... 4-1
Description
.................................. 4-3
Block Diagram
............................... 4-4
Keyboard Diagrams
........................... 4-5
Connector Specifications
...................... 4-12
Keyboard Logic Diagram
...................... 4-13
SECTION 5. SYSTEM BIOS
........•.•.•.......•.. 5-1
System BIOS Usage
........................... 5-3
Keyboard Encoding and Usage
.................. 5-14
BIOS Cassette Logic
.......................... 5-25
System BIOS Listing
.......................... 5-29
Quick Reference
......................... 5-29
SECTION 6. INSTRUCTION
SET ................... 6-1
8088 Register Model
.......................... 6-3
Operand Summary
............................ 6-4
Second Instruction Byte Summary
................ 6-4
Memory Segmentation Model
.................... 6-5
Use of Segment Override
....................... 6-5
Data Transfer
................................ 6-6
Arithmetic
................... . . . . . . . . . . . . . . .. 6-8
Logic
...................................... 6-10
String Manipulation
.......................... 6-11
Control Transfer
............................. 6-12
8088 Conditional Transfer Operations
............ 6-15
Processor Control
............................ 6-16
8087 Extensions
to the 8088 Instruction Set ....... 6-17
Data Transfer
............................... 6-17
Comparison
................................ 6-19
Arithmetic
.................................. 6-19
Transcendental
.............................. 6-21
Constants
.................................. 6-21
Processor Control
............................ 6-22
8088 Instruction Set Matrix
.................... 6-25
Instruction Set Index
................ . . . . . . . . .. 6-27
x

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