Technical data

B-1
Device Mapping
B
Memory Map
Range Name Function
0h to 9FFFFh 640KB System Memory System Memory
Space
A0000h to BFFFFh 128K Video Memory Graphics Display
Memory Buffer
C0000h to CAFFFh 44KB Video BIOS ROM Shadow BIOS of
VGA
CC000h to CD7FFh 6K CD Boot ROM CD Boot
CD800h to CDFFFh 2K EPP Bios Enhance Parallel
Port
E8000h to FFFFFh 96KB PCI, PnP, and
System ROM
BIOS of System
100000h to 8FFFFFFh Additional Memory Space Extended Memory
Space, Size from
8MB up to 144MB