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ROM 128KB system and video BIOS located on
a flash EEPROM device; contains Setup
program code, power-on self test code,
update recovery code, and the PC1 board
auto-configuration utility; upgradable and
write-protectable
video RAM
1MB of standard video RAM providing
video resolutions up to 1024 x 768 in
256 colors; expandable to 2MB by
installing eight 256KB x 4, 60ns ZIP
VRAMs on the main system board to
provide resolutions up to 1280 x 1024 in
256 colors
Shadow RAM Supports shadowing of system and video
BIOS ROM, and ROM located on
expansion board adapters, into RAM
Clock/
calendar
Real-time clock, calendar, and 128-byte
CMOS RAM (114 bytes for general
purpose non-volatile CMOS RAM and
14 bytes for clock and control registers)
on socketed DS12887 device; integrated
battery and oscillator; CMOS RAM
clearable and resetable using the Setup
program or by setting a main system
board jumper
A-2 Specifications