Hardware Compatibility - IBM Personal System/2 60 Technical Reference

Hardware Compatibility
The Model 60 maintains many of the interfaces used by the IBM
Personal Computer AT. In most cases command and status
organization of these interfaces is maintained.
The functional interfaces for the Personal System/2 products are
compatible with the following interfaces:
• The Intel
2
8259 interrupt controllers (without edge triggering).
• The Intel 8253 timers driven from 1.193 MHz (timer 0 and 2 only).
• The Intel 8237 DMA controller-address/transfer counters, page
registers and status fields only. The Command and Request
registers are not supported. The rotate and mask functions are
not supported. The Mode register is partially supported.
• The NS16450 serial port.
• The Intel 8088, 8086, and 80286 microprocessors.
• The Intel 8272 diskette drive controller.
• The Motorola
3
MC146818 Time of Day Clock command and status
(CMOS reorganized).
• The Intel 8042 keyboard port at address hex 0060.
• Display modes supported by the IBM Monochrome Display and
Printer Adapter, the IBM Color/Graphics Monitor Adapter, and the
IBM Enhanced Graphics Adapter.
• The parallel printer ports (Parallel 1, Parallel 2, and Parallel 3) in
compatibility mode.
• Generally compatible with the Intel 80287 and 8087 math
coprocessors.
2
Intel is a registered trademark of the Intel Corporation.
3
Motorola is a trademark of Motorola, Inc.
3-26 Model 60 System Board