Arachne PPP Wizard - modem settings  
Modem not found - please enter settings of serial port where your modem is connected. Winmodems are not supported, sorry...
COM1 (IRQ 4, Base 0x3f8 = "/dev/ttyS0")
COM2 (IRQ 3, Base 0x2f8 = "/dev/ttyS1")
COM3 (IRQ 4, Base 0x3e8 = "/dev/ttyS2")
COM4 (IRQ 3, Base 0x2e8 = "/dev/ttyS3")
Non-standard serial port:
Irq: (2,3,4,5,7,9,10,11,12)
Base (0x3f8,0x2f8,0x3e8, 0x2e8, ...)