Epson Powerspan 2 Podręcznik Użytkownika Strona 194

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Appendix B
Specifications
Main System Board
System
memory
BIOS
Shadow RAM
Video RAM
Clock/
calendar
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 standard; expandable to 1MB using
four 256KB x 4, 60ns, fast-page mode
video DRAM chips
Real-time clock, calendar, and CMOS
RAM for BIOS use; battery backup;
contents can be cleared to default values
by jumper setting
Specifications B-1
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