Herb Peyerl writes:
> One of our machines is a 386-33 doing 115.2k raw data input from satellite
> and it's keeping up just fine... With a Hayes/ESP and some patches in the
> tty subsystem:
> 
> sys/kern/tty.c: change 3 clalloc()s in ttymalloc() to 4k.
> sys/sys/tty.h: change TTYHOG to 4k.

I believe that having a 1k FIFO on the serial card helps
dramatically. Most people, sadly, have no such option. The incremental
cost in PC hardware might be pennies, but no one makes the things
standard equipment anyway...

Perry