
B.1 System I/O ports
Table
Addr. range |
|
(Hex) | Device |
|
|
DMA controller | |
|
|
Interrupt controller 1, master | |
Chipset address | |
|
|
8254 timer | |
|
|
8042 (keyboard controller) | |
|
|
DMA page register, | |
|
|
Interrupt controller 2 | |
|
|
DMA controller | |
|
|
0F0 | Clear math |
|
|
0F1 | Reset math |
|
|
Math | |
|
|
170- 178 | 2nd fixed disk for CompactFlash |
1st fixed disk | |
|
|
Game I/O | |
|
|
Reserved | |
|
|
Serial port 2 | |
Ethernet** | |
|
|
Reserved | |
|
|
Parallel printer port 1 (LPT2) | |
|
|
SDLC, bisynchronous 2 | |
Bisynchronous 1 | |
|
|
Monochrome display and printer adapter (LPT1) | |
|
|
Reserved | |
|
|
Color/graphics monitor adapter | |
|
|
Diskette controller | |
|
|
Serial port 1 | |
|
|
443 | Watchdog timer |
*PNP audio I/O map range from 220 ~ 250H (16 bytes)
**default setting
96