I recently stumbled upon some strange things with the serial devices.

Setup: modem + mouse on different ports both configured to use irq 4
       NetBSD/i386 from Oct 24.
Try the commands displayed after the # prompt.

# kermit -l /dev/tty02
   kermit source is cku190.tar.gz from kermit.columbia.edu.
   /dev/tty02 (16C552) is used by the modem
   hit c at the kermit prompt and type ATZ followed by a return:
   ATZ is echoed by the modem (if configured that way) and it
   responds with OK.
# cat /dev/tty00 &
   /dev/tty00 (16450) is used by the mouse.
# kill %1
   I'm using tcsh 6.05.
# kermit -l /dev/tty02
   hit c at the kermit prompt and type ATZ followed by a return:
   there's no echo from the modem at all!
   Setting a breakpoint with ddb at comintr showed that there are
   _no_ interrupts from the uart at all, no wonder I'm not getting
   anything back from the modem.

Is there anyone out there that can reproduce this ?

Onno van der Linden    c/o    vdlinden@fwi.uva.nl (Frank van der Linden)