Technical data

Device Mapping
6-2
Full Range Processor Memory Address Map
Range Function Size
0 to 9FFFFh Base memory 640 KB
A0000h to BFFFFh Video RAM 128 KB
C0000h to C7FFFh Video BIOS 32 KB
C8000h to DFFFFh BIOS extension ROM (AT bus
used)
96 KB
E0000h to FFFFFh PnP BIOS/APM BIOS 128 KB
100000h to 1FFFFFFh Extended memory 511 MB