Modem problem, stty I/O error

Modem problem, stty I/O error

Post by Hanspeter Pfist » Fri, 12 Apr 1996 04:00:00


I just installed LINUX, so please excuse if this problem seems
trivial to some of you. Trying to set up my internal modem I
ran into the following:

stty -a < /dev/cau1
stty: Standard input: I/O Error

Furthermore (or consequently?), I was not able to use my modem with
"seyon". "setserial" reports the following:

/dev/cua0 at 0x03f8 (irq=4) is a 16550A  # COM1, 1st serial port
/dev/cua1 at 0x02f8 (irq=3) is a 16550A  # COM2, the modem
/dev/cua2 at 0x02e8 (irq=3) is a 16550A  # COM4, 2nd serial port

Is there a problem using two serial devices at the same interrupt
line? How would I easily change these interrupt assignments? Has
anybody experienced the same with "stty"?

Internal modem: Supra 288i SP (28.8)
Connected to: COM2, IRQ3, address 2f8
UART  NS 16550AN

Red Hat Linux, V3.03



| Hanspeter Pfister                Tel: +1-516-632-7604              |
| Computer Science Department      Fax: +1-516-632-8334              |

| Stony Brook, NY 11794-4400 |


Modem problem, stty I/O error

Post by Gary Po » Fri, 19 Apr 1996 04:00:00

Quote:> . . . .
>stty -a < /dev/cau1
>stty: Standard input: I/O Error

try     stty -a < /dev/cua1

                             .  / ^  _ \  .
                             |\| (o)(o) |/|
  #  Old age is like climbing a mountain.  The higher you get,  #
  #          the more tired and breathless you become           #  
  #         But your view becomes much more extensive.          #

                            .oooO   (   )
                            (   )    ) /
                             \ (    (_/


1. stty/modem/pppd settings with Cardinal inetrnal modem


I am not sure if it is the modem setting or just the modem of the other
end of my PPP connection. But I always get Errors in the receive-line of
ifconfig and the transmission is very slow 1,1 KB/s instead of 3,2 KB/s.
I screwed around with the setup of the serial-port stty, the option file
of pppd and the Modem that I am now totally confused.

I have a Cardinal internal modem.

Can someone help me and send the modem init-strings, stty settings and
the option file of pppd ?
Email would the best...

Thanks !

Frank Siepmann

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