Specifications

Table 6-8

System Memory Map

Size

Memory Address

System Function

 

 

 

640 KB

00000000-0009FFFF

Base memory

 

 

 

128 KB

000A0000-000BFFFF

Video memory

 

 

 

48 KB

000C0000-000CBFFF

Video BIOS

 

 

 

160 KB

000C8000-000E7FFF

Unused

 

 

 

64 KB

000E8000-000FFFFF

System BIOS

 

 

 

15 MB

00100000-00FFFFFF

Extended memory

 

 

 

58 MB

01000000-047FFFFF

Super extended memory

 

 

 

58 MB

04800000-07FFFFFF

Unused

 

 

 

2 MB

08000000-080FFFFF

Video memory (direct access)

 

 

 

4 GB

08200000-FFFEFFFF

Unused

 

 

 

64 KB

FFFF0000-FFFFFFFF

System BIOS

 

 

 

Maintenance and Service Guide

6–15