Portwell ROBO-8716VG2A, User Manual

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Appendix A
ROBO-8716VG2A 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 for your reference.
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– 0BB9 31K Program Area
0BBA – 9F3F 590K [Available]
= Conventional memory ends at 640K =
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 – CB1F 44K Video ROM
CB20– DFFF 98.5K Unused
E000 – EFFF 64K System bios temporary Area
F000 – FFFF 64K System ROM
HMA 64K First 64K Extended