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A300 Motherboard
D.1 Address Map
I/O address Range
Description
000-01F DMA Controller
020-021 Interrupt Controller
040-043 System time
060-06F Keyboard Controller
070-07F System CMOS/Real time Clock
080-09F DMA Controller
0A0-0A1 Interrupt Controller
0C0-0DF DMA Controller
0F0-0FF Numeric data processor
1F0-1F7 Primary IDE Channel
2F8-2FF Serial Port 2 (COM2)
378-37F Parallel Printer Port 1 (LPT1)
3B0-3BB
Intel Graphics Controller
3C0-3DF
Intel Graphics Controller
3F6-3F6 Primary IDE Channel
3F8-3FF Serial Port 1 (COM1)
Table D-1: IO Address Map
D.2 1st MB Memory Address Map
Memory address Description
00000-9FFFF System memory
A0000-BFFFF VGA buffer
F0000-FFFFF System BIOS
1000000-
Extend BIOS
Table D-2: 1
st
MB Memory Address Map
Page 164