I just purchased a pci-modem from Actiontec that uses a Lucent chip and on the box it says it is compatible with Linux. I have to create a ttyS4 (com 5)
I have done a /dev/MAKEDEV ttyS4 and this appears to create the file. I then try to setserial /dev/ttyS4 uart 16550A port 0xd800 irq 5 but I get "device ttyS4 not found"? How do I create ttyS4? Here is the info when I cat /proc/pci Bus 0, device 9, function 0: Communication controller: Lucent (ex-AT&T) Microelectronics Unknown device (rev 0). Vendor id=11c1. Device id=480. Medium devsel. Fast back-to-back capable. IRQ 5. Master Capable. No bursts. Min Gnt=252.Max Lat=14. Non-prefetchable 32 bit memory at 0xef001000 [0xef001000]. I/O at 0xd800 [0xd801]. I/O at 0xdc00 [0xdc01]. I/O at 0xe000 [0xe001].