IBM Personal System/2 50 User Manual

Preface
This technical reference contains hardware and software interface
information specific to the IBM Personal System/2 Model 50
computer. It is intended for those who develop hardware and
software products for these systems. Users should understand
computer architecture and programming concepts.
This publication consists of the following sections:
Section 1, “System Overview,” describes the system, features
and specifications.
Section 2, “Programmable Option Select,” describes registers
used for configuration.
Section 3, “System Board,” describes the system specific
hardware implementations.
This technical reference should be used with the following
publications:
IBM Personal System/2 Hardware Interface Technical Reference
— Architectures
IBM Personal System/2 Hardware Interface Technical Reference
— Common Interfaces
IBM Personal System/2 and Personal Computer BIOS Interface
Technical Reference
These publications contain additional information on many of the
subjects discussed in this technical reference.
Warning: The term “Reserved” describes certain signals, bits, and
registers that should not be changed. Use of reserved areas can
cause compatibility problems, loss of data, or permanent damage to
the hardware. When the contents of a register are changed, the state
of the reserved bits must be preserved. When possible, read the
register first and change only the bits that must be changed.
© Copyright IBM Corp. 1989, 1990 v

IBM Personal System/2 50 Specifications

General

Brand	IBM
Model	Personal System/2 50
Category	Desktop
Language	English