*BSD News Article 73455


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From: brian@awfulhak.demon.co.uk (Brian Somers)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: ping works, telnet won't
Date: 11 Jul 1996 09:35:26 +0100
Organization: Coverform Ltd.
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tedm@agora.rdrop.com wrote:
: Of course I know that FreeBSD is a completely different operating system,
: but hey, if IBM's programmers took a dozen iterations to come up with some
: working serial port drivers and they had the resources of the company to
: draw on to purchase as many of the crummy, garbage serial-port cards as they
: wanted, I think it is amazing that the driver works at all!

I suspect that the guy that wrote the sio stuff - sorry, I forget his
name :-( is someone that IBM would love to employ to re-write their
drivers.  The FreeBSD sio stuff is *stunning* IMO.  I can use a 28k
modem at a DTE of 115200 on a 486DX33 on a 8250/16450 UART, with next
to no lost characters (I actually use a 16550 now) !

Of course (credit where it's due), this is also largely to do with
*all* the other higher priority interrupt handlers not hogging the
CPU too.  Amazing what you can do with a good design :-)

--
Brian <brian@awfulhak.demon.co.uk>
Don't _EVER_ lose your sense of humour....