Hello Janusz,

I thought you got this working a long time ago. No? I know you had changed the PCI card out once but I think the new card still used the same serial chip. Correct? If so, you need to see if you can find a serial card with a DIFFERENT serial chip. If you never did get it working with either card, I would suspect the PCI serial card not being fully 16550 compatible. It's a known fact that those old serial-attach Baycom modems do unique things with the serial port signalling to make the TNC work. I also have noticed that the BayCom website has been stripped of all it's content.

To confirm, the serial card you have is this one:

wch_ch353_2s1p :: I see there were some specific changes made in Sept, 2012 which is probably NOT included in a Centos5 - 2.6.18-274 kernel http://www.spinics.net/lists/linux-serial/msg06964.html

--David

On 02/05/2013 01:56 AM, Janusz Przybylski SP1LOP wrote:

(Please trim inclusions from previous messages) _______________________________________________ POL: Potrzebuje pomocy. Jak modem podłączę pod ttyS0 (iobase 3f8 irq 4) na płycie głównej modem działa idealnie nadaje i odbiera. A jak podłączę go do ttyS1 (iobase 2400 irq 177) na karcie I/O to tylko odbiera nie chce nadawać ENG: I need help. How do I plug the modem into ttyS0 (iobase 3f8 irq 4) on the main board modem works perfectly transmits and receives. And when I connect it to ttyS1 (iobase 2400 irq 177) on the I/O just does not want to give answers

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POL: Mam komputer z 2 modemami Baycom Linux CentOS 5, Kernel 2.6.18-274.18.1.el5ax25.2, używam sterownik: baycom_ser_fdx ENG: I have a computer with two modems Baycom Linux CentOS 5 Kernel 2.6.18-274.18.1.el5ax25.2, I use the driver: baycom_ser_fdx

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POL: Używam modemów Baycom, podłączone do karty I/O PCI Modemy tylko odbierają (Rx) ale nie nadają (not Tx) ENG: I use Baycom modems, connected to the I/O PCI Modems only receive (Rx), but does not transmit (Tx not)

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POL: A to konfiguracja karty I/O z komendy: lspci -vvv ENG: And this is the configuration I/O card with the command: lspci-vvv

Serial controller: Device 4348:3253 (rev 10) (prog-if 02 [16550]) Subsystem: Device 4348:3253 Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium

...

TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-

    Interrupt: pin A routed to IRQ 177
    Region 0: I/O ports at 2400 [size=8]
    Region 1: I/O ports at 2000 [size=8]
    Kernel driver in use: serial

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ttyS0, iobase: 0x03f8, irq: 4 (mainboard) ttyS1, iobase: 0x2400, irq: 177 (Card I/O) ttyS2, iobase: 0x2000, irq: 177 (Card I/O)

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baycom_ser_fdx: version 0.10 compiled hdlcdrv: version 0.8 compiled

POL: Może ktoś mi powie dlaczego na ttyS0 działa idealnie a na karcie I/O tylko odbiera .... Gdzie mam błąd. Może w baycom_ser_fdx.c ??? ENG: Can someone tell me why the ttyS0 works perfectly and on the I/O only .... Where do I receive an error. Maybe baycom_ser_fdx.c???