Technical data

Device Mapping
B-2
Processor Memory Address Map
Address Range Function Size
00000 to 9FFFF Main memory 640 KB
A0000 to BFFFF PCI/ISA video buffer memory 128 KB
C0000 to C7FFF Video memory BIOS 32 KB
C8000 to DFFFF PCI/ISA expansion board BIOS and
buffer memory
96 KB
E0000 to EFFFF ISA adapter RAM 64 KB
F0000 to FFFFF System BIOS memory 64 KB