1-2 User’s Guide
1.2 Major Components
The system board has the following major components:
•
One zero-insertion force (ZIF) socket for Intel P54C or P55C
CPU
•
Three memory banks (Bank 1 to Bank 3) composed of six 72-pin
SIMM sockets
•
Synchronous cache module socket that supports 256 KB and
512 KB second-level cache
•
Three EISA and four PCI expansion slots
•
256-KB Flash ROM for system BIOS
•
RTC chip that contains clock/calendar plus 128 bytes CMOS
RAM with battery backup
•
50-pin Fast SCSI-II and 68-pin Wide SCSI interfaces
•
Two 24-pin RDM interfaces
•
IDE hard disk and diskette drive interfaces
•
Onboard VRAM plus a VRAM socket for video memory upgrade
•
Power connector for 200-watt switching power supply
•
I/O, SCSI, VGA, memory, and ASM Pro controller chipsets
•
External ports:
• PS/2-compatible keyboard port
• PS/2-compatible mouse port
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