[comp.unix.aux] kermit serial port troubles

damour@sol.ral.rpi.edu (Kevin Damour) (10/20/90)

Hello,
   Just a quick question.  Has anyone run into problems with kermit in
establishing a connection to /dev/modem with "set line"?  It just
hangs until I pull out the serial cable and then I can set the speed,
plug in the cable, and connect to it.  Everything seems to work great
under Mac OS communication programs.  Could it be a hardware problem?

   Thank you in advance,
      Kevin Damour
      RPI CIRSSE-NASA
      damour@ral.rpi.edu
 

damour@sol.ral.rpi.edu (Kevin Damour) (10/20/90)

Sorry, I forgot to include some system information:
    System (from MacEnvy):
      MACII with PMMU
      8 Mbytes Mem.
      ROM Version 256k (version 120), rev 2.
    A/UX 2.0 CD version
    Cable:
      Signal GND (pin 4)
      Rec Data Inverted (pin 5)
      Transmit Data Inverted (pin 3) 
      Handshake IN (Pin 1) tied to Handshake OUT (pin 2)
         Have tried with and without Pin 1 and Pin 2 tied together

    Thank you,
     Kevin Damour
     RPI CIRSSE-NASA
     damour@ral.rpi.edu

kev@nvuxl.UUCP (Kevin P Fowler) (10/22/90)

I have also experienced problems using the serial port under
A/UX 2.0.  Basically, I was messing around with VersaTerm Pro,
which works fine under the MacOS, while in A/UX 2.0 and found
that I would get a prompt from the MICOM, but nothing I typed
appeared in the window.

I then tried to get out to the MICOM through the serial port
using Kermit.  I did set line... which was accepted, as was 
set speed ..., but when I connected the first character I typed
caused an error message ".. I/O error .." ( I don't have the exact
text here).  Sometimes I actually got as far as to login to the
mainframe, but after a couple of commands, it would bomb out
and give that error message again.

Apple said that it was awfully wierd.  The VersaTerm Pro people
said that there wass something strange with the serial ports
on the IIfx under AU/X 2.0.  I'm waiting for Apple to log in and 
rummage around my system to see if they can find something.  
I'll let you know if the solve this because it may be connected to 
this other serial port problem.

Also, if anyone else has experienced this and solved it, let me know!
I have a IIfx with 8MB.  No probs under MacOS, mucho probs under A/UX 2.0.

Kevin 

damour@sol.ral.rpi.edu (Kevin Damour) (10/23/90)

I received some e-mail from several people.  Thank you.
Peter Espen suggested to try "stty -n /dev/tty0 -modem"
Thanks Peter, this cleared up my kermit problem.

   Thank you for your replys,
     Kevin Damour
     RPI CIRSSE-NASA
     damour@ral.rpi.edu

Now I'll try to tackle SLIP!