B.24 AC-97 Audio Interface (CN43)
1 2 3 4 5 6 7 8 9 10 11 12
Table B.22: System I/O ports
1 | VCC | 2 | GND |
3 | SYNC | 4 | BITCLK |
5 | SDOUT | 6 | SDIN |
7 | SDIN2 | 8 | |
9 | +12V | 10 GND |
B.25 System I/O Ports
Table B.23: System I/O ports
Addr. range (Hex)Device
DMA controller | |
Interrupt controller 1, master | |
Chipset address | |
8254 timer | |
8042 (keyboard controller) | |
| mask |
DMA page register | |
Interrupt controller 2 | |
DMA controller | |
0F0 | Clear math |
0F1 | Reset math |
Math | |
Fixed disk | |
Game I/O | |
Parallel printer port 2 (LPT3) | |
Serial port 2 | |
Prototype card | |
Reserved |
116 |