IBM 770 Laptop User Manual


 
Telephony (Modem) Function
The telephony (modem) function provides the following settings:
I/O Address IRQ Level DMA Channel
0220–0233 (default)
0240–0253
0260–0273
0280–0293
0388–038B (synthesizer)
IRQ 5 (default)
IRQ 7
IRQ 10
IRQ 11
DMA 0
DMA 1 (default)
DMA 6
DMA 7
Serial Port
COM1 (I/O: 03F8 - IRQ 4)
COM2 (I/O: 02F8 - IRQ 3) (default)
COM3 (I/O: 03E8 - IRQ 4)
COM4 (I/O: 02E8 - IRQ 3)
3-6 Subsystems