AXIOMTEK SBC82610 SERIES, User Manual

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SBC82610 Half-size All-in-One CPU Card Series User’s Manual
Hardware Description
26
3.3 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
000-01F
DMA controller #1
020-03F
Interrupt controller #1
040-05F Timer
060-06F
Keyboard controller
070-07F
Real time clock, NMI
080-09F
DMA page register
0A0-0BF Interrupt controller #2
0F0
Clear math coprocessor busy signal
0C0-0DF
DMA controller #2
0F1 Reset math coprocessor
0F8-0FF Math processor
120
Disable watchdog timer operation (read)
121
Enable watchdog timer operation (read)
122 Watchdog
1F0-1F8
Fixed disk controller
200-207
Game port
300-31F
Prototype card
360-36F Reserved
378-37F
Parallel port #1
3B0-3BF
MDA video card (including LPT1)
3C0-3CF EGA card
3D0-3DF CGA card
3F0-3F7
Floppy disk controller
3F8-3FF
Serial port #1 (COM1)
2F8-2FF Serial port #2 (COM2)