C.1 io address map – IEI Integration ROCKY-3786 v4.0 User Manual
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C.1 IO Address Map
I/O address
Range
Description
000-01F DMA
Controller
020-021 Interrupt
Controller
040-05F 8254
timer
060-06F Keyboard
Controller
070-07F
NMI Mask/Real time Clock
080-09F DMA
Controller
0A0-0BF Interrupt
Controller
0C0-0DF DMA
Controller
0F0-0FF Numeric
data
processor
1F0-1F8 Fixed
Disk
2F8-2FF Serial
Port
2
(COM2)
378-37F
Parallel Printer Port 1 (LPT1)
3C0-3CF Reserved
3D0-3DF Color/Graphics
Monitor
Adapter
3F7-3F7
Standard floppy disk controller
3F8-3FF Serial
Port
1
(COM1)
Table C-1: IO Address Map
C.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 C-2: 1
st
MB Memory Address Map
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