Re: sun serial >38400

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#258

From: Greg Onufer
Date: Sat, 09 Jan 1993 01:17

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In <5d72c2b5.1bc5b@pisa.citi.umich.edu> rees@pisa.citi.umich.edu (Jim Rees) writes:
>The problem of missing interrupts is a real one.  If your mtu is 1500, then
>you have to catch every one of 1500 interrupts in a row.  If you miss even
>one, the packet is lost.  While processing an interrupt in 13 us may be
>easy, guaranteeing that you can get to it in time is not, at least in a
>general purpose computer.

Even the oldest z8530's have a 2-byte FIFO as well as the receiver
shift register.  You don't have to hit *every* one of the 1500
interrupts...

Cheers!greg
Standard disclaimers apply

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Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!cs.utexas.edu!sun-barr!news2me.EBay.Sun.COM!exodus.Eng.Sun.COM!vsync.Eng.Sun.COM!exodus
From: exodus@vsync.Eng.Sun.COM (Greg Onufer)
Newsgroups: comp.protocols.ppp
Subject: Re: sun serial >38400
Date: 9 Jan 1993 01:17:09 GMT
Organization: Sun Microsystems Inc., Mountain View, CA
Lines: 13
Distribution: usa
Message-ID: <lks9slINNkpd@exodus.Eng.Sun.COM>
References: <searsk-030193070145@3.7.192.190> <1993Jan6.213927.2788@ukw.uucp> <1igu0rINNsvt@grapevine.EBay.Sun.COM> <1993Jan7.194405.15843@colorado.edu> <1993Jan8.122742.3793@hemlock.cray.com> <5d72c2b5.1bc5b@pisa.citi.umich.edu>
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