Справочник Пользователя для IBM 770

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