Mmm, baudrate, then maybe flow control it's been so long sense i've had
modem toubles. but maybe it's a start
On Fri, 24 Sep 1999, Dan Brown wrote:
> OK, I finally got the NIC working on this Compaq. However, I still
> can't get a properly-functioning serial port. Here's what's happening:
>
> First, the machine has one built-in serial port, so I attached an
> external modem to that port. It's set in the BIOS as COM1:, io 0x3f8,
> irq 4, and Linux automatically recognizes all of those settings--dmesg
> shows ttyS0 at those addresses, and setserial recognizes the UART as a
> 16550a. When I run minicom and set it to use /dev/ttyS0, the modem
> doesn't respond at all, and none of the lights flash when I type
> commands.
>
> Second, I have an internal ISA hardware modem, which can work in PnP
> mode, or have its addresses set using DIP switches and jumpers. I first
> tried to use it in PnP mode, giving it io 0x2f8, 0x3e8, 0x2e8, and (I
> think) 0x100, with irq 3, 4, and 5, all as specified in the file
> generated by pnpdump. In every case, I got a fatal error allocating 8
> bytes of io at the requested address, even though /proc/ioports showed
> all of those addresses to be free.
>
> Being thus foiled, I decided to use the DIP switches to set the modem.
> I've mostly tried it at COM2, irq 3, and COM3, irq 4 and 5. What
> typically happens here is that I can start minicom and type commands,
> and the modem will respond--after a delay of about 15-20 seconds. When
> I've seen this problem before, it's been because the irq was set
> incorrectly, but in this case, it's set correctly--at least, setserial
> agrees with what I've set using the switches.
>
> I know that serial port conflicts are often a trial-and-error issue,
> but I'm not even sure what else to try here. Any help would be
> appreciated.
>
> --
> Dan Brown, KE6MKS, [EMAIL PROTECTED]
> Meddle not in the affairs of dragons, for you are crunchy and taste good
> with ketchup.
>
--
MandrakeSoft http://www.mandrakesoft.com/
--Axalon
