Table of Contents
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Chapter 1
Introduction
Features
The SX CAT is an integrated AT®-compatible computer motherboard that uses the Intel® 80386SX microprocessor. The 80386SX provides the affordability of a
16-bit computer with the power of the 32-bit 80386DX. The SX CAT includes an AMIBIOS specifically tailored for the Chips and Technologies® SCAT-SX®
chipset.
On the SX CAT, the control logic necessary for the basic AT computer functions have been compressed into one Chips and Technologies, Inc®. chip, the C&T
82C836. Another chip, the C&T 82C711, handles basic input/output functions such as serial, parallel, floppy disk and IDE hard disk drive control. Fewer
components translates into a more reliable, higher price/performance design.
Microprocessor Speeds
The SX CAT motherboard is available in either 16 MHz or 20 MHz versions depending on the version of the 80386SX processor is installed.
The I/O bus runs at ½ the CPU speed to be compatible with the original AT design. The processor runs at either the normal clock speed or one-half clock speed
for software compatibility.
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