Lenovo PC 300PL Technical Information Manual 6275, 6285 - Page 60

System Compatibility, Hardware Compatibility

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Chapter 7. System Compatibility Chapter 7. System Compatibility This chapter discusses some of the hardware, software, and BIOS compatibility issues for the computer. Refer to &comp. 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: Intel 8259 interrupt controllers (edge-triggered mode) National Semiconductor NS16450 and NS16550A serial communication controllers Motorola MC146818 Time of Day Clock command and status (CMOS reorganized) Intel 8254 timer, driven from a 1.193 MHz clock (channels 0, 1, and 2) Intel 8237 DMA controller, except for the Command and Request registers and the Rotate and Mask functions; the Mode register is partially supported Intel 8272 or 82077 diskette drive controllers Intel 8042 keyboard controller at addresses hex 0060 and hex 0064 All video standards using VGA, EGA, CGA, MDA, and Hercules modes Parallel printer ports (Parallel 1, Parallel 2, and Parallel 3) in compatibility mode Use the above 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. 48 Copyright IBM Corp. June 1998

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Chapter 7.
System Compatibility
Chapter 7. System Compatibility
This chapter discusses some of the hardware, software, and BIOS compatibility issues for the computer.
Refer to &comp. 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:
Intel 8259 interrupt controllers (edge-triggered mode)
National Semiconductor NS16450 and NS16550A serial communication controllers
Motorola MC146818 Time of Day Clock command and status (CMOS reorganized)
Intel 8254 timer, driven from a 1.193 MHz clock (channels 0, 1, and 2)
Intel 8237 DMA controller, except for the Command and Request registers and the Rotate and Mask
functions; the Mode register is partially supported
Intel 8272 or 82077 diskette drive controllers
Intel 8042 keyboard controller at addresses hex 0060 and hex 0064
All video standards using VGA, EGA, CGA, MDA, and Hercules modes
Parallel printer ports (Parallel 1, Parallel 2, and Parallel 3) in compatibility mode
Use the above 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.
48
Copyright IBM Corp. June 1998