System Memory Map

000FFFFFFh

00FF0000h

000FE0000h

System BIOS ROM: 64KB

Duplicated from 0F0000h

Reserved for system board: 64KB

Duplicated from 0E0000h

16MB

(Maximum system memory)

00100000h

Extended memory

System BIOS ROM: 64KB

Default Shadow RAM

Duplicated at FF0000h

1MB

000F0000h

000C8000h

Reserved for system board: 64KB

Duplicated at FE0000h

I/O Expansion ROM: 96KB Reserved

for ROM on I/O adapters

VGA BIOS ROM: 32KB

Default Shadow RAM

Video memory: 128KB

Reserved for graphics display

buffer

000A0000h

 

640KB

Conventional system memory: 640KB

00000000h

Specifications A-5