On Mar 3, Simon Burge wrote
> 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.
> 

I occasionally use a dx2/66 with a 33k modem on a 16450, no problems.
I think I run the serial port at 115200 - I can't check rigth now, but it's
at last 56k.

A lot of good work has been done on the serial port, upgrading you 386/20
to 1.3.3 would help (I'm not sure it would drive your modem at full speed, but
at last hardware flow control should preven silo overflows).

--
Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
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