IS> No, that's not so, Peter; not if you're not running multitasking.  A
 IS> 10MHz XT with an 8250 UART (or an AT with a 16450) readily handles a
 IS> 57600bps port at sustained rates, though 115200bps tends to be a bit
 IS> too flakey.

 AA> It seems to vary for reasons not known...  I had an 16450
 AA> and it would totally lock up at 38400.

How do you mean, lock up?  Which 'it'?

 AA> 19200 was flaky (lock ups now and then) and 9600 was reliable.

The only symptom you should see of a serial port with insufficient
buffering is overruns, giving missed characters, usually seen as 'bad
blocks' with file transfers.  If something is 'locking up' it's hardly
likely to do with the port, unless you're running a very buggy FOSSIL or
other comms driver?

Ian

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