ActionTec 56K Internal PC Modem User Manual page 32

chmod 666 /dev/modem
instead (where x is the COM port) will let all users access the modem.
Step 3 Determine the port and IRQ assigned to the device by typing:
cat /proc/pci
and pressing ENTER. The following is an example of a possible outcome:
5. Non-prefetchable 32 bit memory at 0x00000000.
Bus 0, device 17, function 0:
Communication controller: Unknown vendor Unknown de-
vice (rev 0).
Vendor id=11c1. Device id=480
Medium devsel. Fast back-to-back capable.
Master Capable
No Bursts
Min Gnt=252.Max Lat=14
Non-prefetchable 32 bit memory at 0xe4000000.
I/O at 0x6400.
I/O at 0x6800.
I/O at 0x6c00.
Step 4 Write down the first input/output range and IRQ. In this case, the I/O
address is 0x6400 and the IRQ is 11. Type
setserial /dev/modem uart 16550A port 0x6400 irq 11
(The IRQ and port may vary depending on the results from step 3.)
Step 5 Try out the settings in a program such as minicom.
Step 6 If the settings work, then add the line above in the /etc/rc.d/rc.local file.
This way, the modem will be set properly each time Linux is booted.
Step 7 To set Linux to configure the modem on boot-up, there are several options.
One method is going to the /etc/rc.d/ directory, and, using an editing
program such as jed, edit the rc.local file, inserting
setserial /dev/modem uart 16550A prot 0x6400 irq 11
as the last line.
32
IRQ 11.