User Guide

1-2 User’s Guide
1.1 System Board Layout
The system board has the following features and components:
•
Supports 3.3V Intel Pentium CPU (75/50, 90/60, 100/66, 120/60,
133/66, 150/60, 166/66 MHz, 200/66 MHz)
•
128-MB maximum system memory
•
Four 72-pin SIMM sockets that accept 4-, 8-, 16-, and 32-MB
SIMMs, with or without Extended Data Output (EDO) and Error
Checking and Correction (ECC) functions
•
256-KB or 512-KB pipelined-burst second-level cache
•
Integrates an enhanced PCI local bus IDE controller
•
Onboard video and graphics controller and 1-MB VGA memory,
upgradable to 2 MB
•
Audio controller compatible with Sound Blaster, Microsoft Sound,
and MPU-401
•
128-KB Flash ROM for system BIOS
•
One riser card slot
•
Dual 16C550 buffered serial ports and one ECP/EPP parallel port
•
USB interface that enables the system to support more
peripherals (optional)
•
Standard connector for Wavetable upgrade (optional)
•
PS/2 mouse and keyboard interface
•
Plug-and-Play function
•
Power-management function
•
Infrared function for cableless communication (optional)
•
Software shutdown circuitry (optional)
Figure 1-1 shows the board layout and the locations of the important
components.