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3 System Board (P/Ns D3657-63001 and D3661-63001)
Principal Components and Features
Function
ISA bus controller
(for SB82371FB only)
Fast IDE controller
(for SB82371FB only)
System Board Configuration Switches
The system board configuration switches are used to configure certain
aspects of the computer.
O P E N
The system board switches used for configuring the PC are summarized in
the following table.
66
Fully compatible with ISA bus standard
Supports asynchronous ISA bus operation up to 16 MHz
Integrates:
two 82C37A DMA controllers
two 82C59A interrupt controllers
82C54 timer
hidden ISA refresh controller
support for BIOS
port A, B and NMI logic
Supports PIO and Bus Master IDE
Supports up to Mode 4 timings
Up to 22 MB/s transfer rate
8×32-bit buffer for Bus Master IDE PCI burst transfers
Example of system board
switch settings
Features
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