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Appendix A
ROBO-8714VG2A User’s Manual
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.
Memory Area
Size
Device Description
0000 – 003F
1K
Interrupt Area
0040 – 004F
0.3K
BIOS Data Area
0050 – 006F
0.5K
System Data
0070 – 03E1
13K
DOS
03E2 – 0CC4B
35K
Program Area
0CC5 – 9F3F
585K
[Available]
= Conventional memory ends at 638K =
9F40 – 9F7F
1K
Unused
9F80 – 9FFF
2K
Extended BIOS Area
A000 – AFFF
64K
VGA Graphics
B000 – B7FF
32K
Unused
B800 – BFFF
32K
VGA Text
C000 – CFFF
64K
Video ROM
D000 – D3FF
16K
ROM
D400 – EFFF
112K
Unused
DA4A – DFFE
22K
High RAM
HMA
64K
First 64K Extended