P C / 1 0 4 C P U M o d u l e
P F M - 5 5 0 S
Appendix B I/O Information
B - 2
B.1 I/O Address Map
Address Description
User
Address
000-01F
DMA Controller #1
000-000F
020-03F
Interrupt Controller #1, Master
020-021
040-05F System
Time
040-043
060-06F
8042 (Keyboard Controller)
060-064
070-07F
Real time Clock, NMI (non-maskable
Interrupt) Mask
070-073
080-09F
DMA Page Register
080-08F
0A0-0BF
Interrupt Controller #2
0A0-0A1
0C0-0DF
DMA Controller #2
0C0-0DF
0F0-0FF Math
Coprpcessor
0F0-0FF
170-177
Secondary IDE Channel
170-177
1F0-1F7
Primary IDE Channel
1F0-1F7
2F8-2FF
Serial Port 2
2F8-2FF
378-37F
Parallel Printer Port 1
378-37F
3B0-3DF
EGA / VGA card
3B0-3DF
3F8-3FF
Serial Port 1
3F8-3FF
B.2 1
st
MB Memory Address Map
Memory Address
Description
00000-9FFFF System
memory
A0000-BFFFF VGA
buffer
C0000-CBFFF VGA
BIOS
E0000-FFFFF System
BIOS