Is a 486/66 with a 16450 fast enough to drive a 28k modem (with PPP)
under NetBSD 1.3.3?  The current machine is a 386/20 with a 16550
running NetBSD 1.1, and it gets _heaps_ of silo overflows.  I'm about to
upgrade a machine, but can't find a spare 16550 multi I/O card, and this
will save me going out to buy one.

A _quick_ check of the port-i386 archives didn't seem to have an answer.

TIA,
Simon.