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Appendix A System Settings and Pin
Assignments
A.1 System I/O Address and Interrupt Assignment
Table A.1: UNO-2173A/AF System I/O Ports
Address Range | Device |
|
|
DMA controller (slave) | |
|
|
Interrupt controller 1, (master) | |
|
|
8254 timer/counter | |
|
|
8042 (keyboard controller) | |
|
|
|
|
DMA page register, | |
|
|
Interrupt controller 2 (slave) | |
|
|
DMA controller (master) | |
|
|
0F0 | Clear math |
|
|
0F1 | Reset math |
|
|
Math | |
|
|
Secondary IDE channel | |
|
|
Primary IDE channel | |
|
|
Serial port 2 | |
|
|
Parallel printer port 1 (reserved) | |
|
|
Serial port 3 | |
|
|
Serial port 1 | |
|
|
24 |