[CentOS] serial port in linux

[Barry Brimer]

>            i have centos 4.2. I have install a PCI card having serial port.
> when the os is booted it detects the new hardware ( serial port) .a device is also created /dev/ttyS0. the port works very goog on the same pc in windows XP. but when i connect any serial device to that port in linux it does not work.
>
> in /proc/ioports
>
> there is entry for that port as
>
> 0000-001f : dma1
> 0020-003f : pic1
> 0040-005f : timer
> 0060-006f : keyboard
> 0070-007f : rtc
> 0080-008f : dma page reg
> 00a0-00bf : pic2
> 00c0-00df : dma2
> 00f0-00ff : fpu
> 0170-0177 : ide1
> 01f0-01f7 : ide0
> 0376-0376 : ide1
> 03c0-03df : vga+
> 03f6-03f6 : ide0
> 03f8-03ff : serial(auto)                              ---- > displayed here
> 0cf8-0cff : PCI conf1
> c000-cfff : PCI Bus #01
>  c800-c8ff : Realtek Semiconductor Co., Ltd. RTL-8139
>    c800-c8ff : 8139too
> d800-d81f : PCI device 8086:24d3 (Intel Corp.)
> dc00-dc1f : PCI device 8086:24d2 (Intel Corp.)
>  dc00-dc1f : usb-uhci
> e000-e01f : PCI device 8086:24d4 (Intel Corp.)
>  e000-e01f : usb-uhci
> e400-e41f : PCI device 8086:24d7 (Intel Corp.)
>  e400-e41f : usb-uhci
> e800-e81f : PCI device 8086:24de (Intel Corp.)
>  e800-e81f : usb-uhci
> ec00-ec07 : PCI device 8086:2572 (Intel Corp.)
> ffa0-ffaf : PCI device 8086:24db (Intel Corp.)
>
>
> please help me out is there any extra configuration to be done.

<http://tldp.org/HOWTO/Remote-Serial-Console-HOWTO/>