User`s guide

Appendix B
Specifications
Main System Board
System
memory
BIOS
Shadow RAM
Video RAM
Clock/
calendar
CPU Card
CPU
8MB RAM standard on two 4MB SIMMs;
expandable using 1MB, 2MB, 4MB, 8MB,
16MB, or 32MB single- or double-sided
SIMMs up to 128MB (maximum); SIMMs
must be 80ns, 36-bit, 72-pin, tin-plated,
fast-page mode type; 16MB and 32MB
SIMMs may be 70ns, 36-bit, 72-pin,
tin-plated, fast-page mode type
256KB on two 128KB FLASH EEPROM
devices for system and video BIOS
Automatically copies the system BIOS
from ROM into RAM; shadow RAM
addresses for video BIOS and external
BIOS are software selectable
512KB
Real-time clock, calendar, and CMOS
RAM for BIOS use; battery backup;
contents can be cleared to default values
by jumper setting
Intel 486DX2, 66 MHz microprocessor;
simulated 8 MHz processor speed
selectable through software or keyboard
command
Specifications B-1