C.1 System I/O Ports
Table C.1: System I/O Ports
Addr. range (Hex) | Device |
|
|
DMA controller | |
Interrupt controller 1, master | |
8254 timer | |
8042 (keyboard controller) | |
DMA page register | |
Interrupt controller 2 | |
DMA controller | |
0F0 | Clear math |
0F1 | Reset math |
Math | |
Fixed disk | |
170- 178 | Fixed disk (2nd IDE) |
Reserved (Game I/O) | |
Parallel printer port 2 (LPT 3) | |
Series port 4 | |
Serial port 2 | |
Prototype card | |
Reserved | |
Parallel printer port 1 (LPT 2) | |
SDLC, bisynchronous 2 | |
Bisynchronous 1 | |
Monochrome display and printer adapter (LPT1) | |
Reserved | |
Color/graphics monitor adapter | |
Series port 3 | |
Diskette controller | |
Serial port 1 |
*PNP audio I/O map range from 220 ~ 250H (16 bytes)
66 |