Appendix A
ROBO-8913VG2AR 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
0700-0483 16K
DOS
0484-053F 2.9K
Program
Area
0540-9EFE 614K
[Available]
9EFE-9EFE 0.1K
Unused
= Conventional memory ends at 640K =
9F00-9FBF
3K
Extended BIOS Area
9FC0-9FFF 1K
Unused
A000-AFFF 64K
VGA
Graphics
B000-B7FF 32K
Unused
B800-BFFF 32K
VGA
Text
C000-CAFF 44K
Video
ROM
CB00-CC49 5.2K
Unused
CC4A-CFFF 14K
High
RAM
D000-DFFF 64K
Page
Frame
E000-EEFF 60K
Unused
EF00-EFFF 4K
ROM
F000-FFFF 64K
System
ROM
HMA
64K
First 64K Extended
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