Lenovo PC 300GL Technical Information Manual 6272, 6282 - Page 39

System Compatibility

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Chapter 6. System Compatibility Chapter 6. System Compatibility This chapter discusses some of the hardware, software, and BIOS compatibility issues for the computer. Refer to PC 300 Systems (6272/6282) Compatibility Report for a list of compatible hardware and software options. Hardware Compatibility This section discusses hardware, software, 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. © Copyright IBM Corp. October 1997 27

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Chapter 6.
System Compatibility
Chapter 6. System Compatibility
This chapter discusses some of the hardware, software, and BIOS compatibility issues for the computer.
Refer to
PC 300 Systems (6272/6282) Compatibility Report
for a list of compatible hardware and software
options.
Hardware Compatibility
This section discusses hardware, software, 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.
Copyright IBM Corp. October 1997
27