Re: Sun's ZS chips (was Re: Old Sun question - HELP!!!!!) - Article 2295 - go-pugleaf

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Re: Sun's ZS chips (was Re: Old Sun question - HELP!!!!!)

#2295

From: Peter Eriksson
Date: Mon, 11 Jan 1993 12:17

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lindh@uhasun.hartford.edu (Andrew Lindh) writes:

>In article <1993Jan9.022926.26234@siemens.com>, aad@siemens.com (Anthony Datri) writes:
>> 
>> >Why the heck did Sun not put better serial chips in their new machines??
>> >Isn't it obvious by now that the Zilog chips SUCK?
>> 
>> What's so terrible about the Zilog chips?
>> ======================================================================8--<

>On a Sun the highest standard speed is 38.4K!!!
>You can't get to 57.6K......

Yes you can... But you'll have to hack the kernel to do it.
You can even make it go 76800 bps.

Check out ftp.lysator.liu.se:pub/sun/misc-info/Sun76800BaudSerial.txt for
more information.

But I agree, Sun could have choosen to use the newer Z85230 (I think that
was the name of the new version of the old Z8530) chip. It has receive
and transmit FIFOs making it possible to reduce the number of interrupts
needed (with a little clever programming) while still being backwards
compatible.

/Peter
--
Peter Eriksson                                              pen@lysator.liu.se
Lysator Academic Computer Society                 ...!uunet!lysator.liu.se!pen
University of Linkoping, Sweden                I'm still bored. Flame me again.

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<rcaldwel.726296968@ponder> <1993Jan6.115253.19572@elroy.jpl.nasa.gov> <1993Jan9.022926.26234@siemens.com> <1993Jan10.150522.8160@sol.ctr.columbia.edu>

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Path: arc1-ca.pugleaf.net!sparky!uunet!think.com!enterpoop.mit.edu!eru.mt.luth.se!kth.se!lysator.liu.se!pen
From: pen@lysator.liu.se (Peter Eriksson)
Newsgroups: comp.sys.sun.hardware
Subject: Re: Sun's ZS chips (was Re: Old Sun question - HELP!!!!!)
Message-ID: <C0ovHw.28H@lysator.liu.se>
Date: 11 Jan 93 12:17:55 GMT
References: <rcaldwel.726296968@ponder> <1993Jan6.115253.19572@elroy.jpl.nasa.gov> <1993Jan9.022926.26234@siemens.com> <1993Jan10.150522.8160@sol.ctr.columbia.edu>
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