guys,

I need help configuring with my PCI Dual Serial Board connected thru a PCI Bridge. The PCI-COM board has two serial ports and i need activate those serial
and link it to /dev/ttyS2 and /dev/ttyS3.

"lspci -vv" already detected the PCI-COM board and displays informations such as

"IT8874F PCI Dual Serial Port Controller"
irq 9 and
ports
0xb400
0xb800
0xbc000
0xc000
0xc400
0xc800 and displays the
UART as 16550

in Suse (YAST) additional information:
driver it uses is
"driver=parport_pc"

i already tried issuing setserial for all the io ports but only 0XC000 succeed
Example:
when i try to issue
"setserial /dev/ttyS2 uart 16550 port 0xB400 irq 9" and test by /cat/dev/ttyS2 gives me "Input/Output error"

But when I try
"setserial /dev/ttyS2 uart 16550 port 0xC000 irq 9" and test by /cat/dev/ttyS2
it does succeed but it displays in /proc/tty/driver/serial as
RTS|DTR or Empty Device. The device connected to it was not detected.

i tried connecting a serial mouse to no good. I plan to use COM ttyS2 for touch screen device( serial ) in the future


I need help in:
a) What do else i need to do to make ttyS2 and ttyS3 work? some site says
the first port in a PCI Serial is /dev/ttyS4 is this correct?
b) How can i test if it already succeed?
c) why is it only the 4th IO works in using setserial?

d) Am I lacking some steps? what am i doing wrong?

e) My boss told me to look at parport cause the problem is there? is he right? what do i need to do in parport settings?

f) Do I need to set something in my BIOS or a jumper perhaps in the card?
g) Do I need to install some drivers?

PS.

-I already visited sites for help and what ive found is the same instruction to what ive done above.
-Ive already edited by boot.local to add the setserial i used above.
-Im using Suse and RedHat (ive got 2 machines to test with the same card)
thanks