Troubleshooting
WADE-8022 User’s Manual
5-5
System Memory Address Map
Each On-board device in the system is assigned a set of memory addresses, which
also can be identical of the device. The following table lists the system memory
address used for your reference.
Memory Area
Size
Description
0000 – 003F
1K
Interrupt Area
0040 – 004F
0.3K
BIOS Data Area
0050 – 006F
0.5K
System Data
0070 – 0E2E
54K
DOS
0E2F - 0F6B
5K
Program Area
0F6C – 9D7F
568K
【
Available
】
First Meg -- Conventional memory end at 630K --
9D80 – 9EFF
6K
Extended BIOS Area
9F00 – 9FFF
4K
Unused
A000 - AFFF
64K
VGA Graphics
B000 – B7FF
32K
Unused
B800 - BFFF
32K
VGA Text
C000 - CEBF
59K
Video ROM
CEC0 - EFFF
133K
Unused
F000 - FFFF
64K
System ROM
HMA
64K
First 64K Extended