Chapter 6. System Compatibility
Chapter 6. System Compatibility
This chapter provides information on some of the hardware, software, and BIOS compatibility issues for
the IntelliStation M Pro computers (Type 6898) For a list of compatible hardware and software option
packages available, refer to the
Compatibility Report
for these computers on the World Wide Web at
http://www.us.pc.ibm.com/cdt.
Hardware Compatibility
This section discusses hardware and BIOS compatibility issues that must be considered when designing
application programs.
Many of the interfaces are the same as those used by the IBM Personal Computer AT. In most cases,
the command and status organization of these interfaces is maintained.
The functional interfaces are compatible with the following interfaces:
The Intel 8259 interrupt controllers (edge-triggered mode)
The National Semiconductor NS16450 and NS16550A serial communication controllers
The Motorola MC146818 Time of Day Clock command and status (CMOS reorganized)
The Intel 8254 timer, driven from a 1.193 MHz clock (channels 0, 1, and 2)
The Intel 8237 DMA controller, except for the Command and Request registers and the Rotate and
Mask functions; the Mode register is partially supported
The Intel 8272 or 82077 diskette drive controllers
The Intel 8042 keyboard controller at addresses 0060h and 0064h
All video standards using VGA, EGA, CGA, MDA, and Hercules modes
The parallel printer ports (Parallel 1, Parallel 2, and Parallel 3) in compatibility mode
Use the following information to develop application programs. Whenever possible, use the BIOS as an
interface to hardware to provide maximum compatibility and portability of applications among systems.
32 Copyright IBM Corp. 1997
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