SBC82400 ISA Half-Size CPU Board Series User’s Manual
Hardware Description
25
3.5
I/O Port Address Map
The CPU card communicates via I/O ports. It has a total of
1KB port addresses that can be assigned to other devices via
I/O expansion cards.
Address Devices
0C0-0DEh
DMA controller #1
0F0h
Reset Numeric Error
102
VGA Setup Register
120-123
Watch-dog timer operation
170-177
Secondary IDE Channel
1F0-1F7
Primary IDE Channel
2F8-2FF
Serial Port 2
378-37F
Parallel Port 1
3B4, 3B5, 3BA
VGA Registers
3D4, 3D5, 3DA
VGA Registers
03C-3F5
VGA Registers
3F6
IDE Command Port
3F7
Floppy Command Port
3F7,bit 7
Floppy Disk Change
3F8-3FF
Serial Port 1
3F0-3FF
Reserved
C000-C0FF
PCI Configuration Registers
