User`s guide

2. The Mainboard

The mainboard is the largest circuit board in the computer. It contains the

CPU (Central Processing Unit), the Level 2 cache, expansion slots, ports

and connectors for other components, and the system’s main memory, or

RAM (Random Access Memory).

Chapter 2 - The Mainboard

Mainboard Features

Standard Features:

• Intel Pentium (aka P54C) running at 75, 90, or 100 MHz

• Optional 256K or 512K Level 2 system cache, write-back, direct-

mapped

• Integrated on-board floppy drive controller

• Two on-board IDE hard drive interface ports supporting up to 4

IDE devices (both are PCI local bus)

• Bi-directional Parallel Port (configurable through software)

• Two RS232, 16550 high-speed serial ports

• RAM Configurations: 2, 4, 6, 8, 10,12, 16, 32, 64, 128, 192,

384MB, etc. (Banks must hold identical pairs)

• 384Mb maximum RAM capacity

• Flash BIOS, relocatable to system RAM to boost performance

• Five 16-bit ISA expansion slots

• Three 32-bit PCI local bus expansion slots

• Clock/calendar with on-board battery backup

• Energy saving, low power “sleep” mode

Factory Installed Options:

• AMD SCSI host adapter socket on PCI bus

• AMD network controller on PCI bus