NetNews Usenet Archive 1992 #27/NN_1992_27.iso/spool/comp/sys/m68k/1381

Internet Message Format | 1992-11-19 | 1.9 KB

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Newsgroups: comp.sys.m68k,comp.sys.sun.hardware
Path: sparky!uunet!van-bc!cs.ubc.ca!unixg.ubc.ca!kakwa.ucs.ualberta.ca!acs.ucalgary.ca!cpsc.ucalgary.ca!xenlink!newt.cuc.ab.ca!deraadt
From: [e-mail] (Theo de Raadt)
Subject: Re: SUN 3 Hardware Hacks...
In-Reply-To: [e-mail]'s message of 17 Nov 1992 13: 13:11 GMT
Message-ID: <[e-mail]>
Sender: [e-mail]
Nntp-Posting-Host: newt
Organization: little lizard city
References: <[e-mail]>
Date: Wed, 18 Nov 1992 22:08:20 GMT
Lines: 25

In article <[e-mail]> [e-mail] (Travis C. Hayes) writes:
   Inserting a 68030:
      What I have heard for this one is simple, but the procedure requires
   a skilled de/solderer. You may have noticed that there is a place for a
   socket next to the 68020 on the Sun 3/60 mainboard. This is for a 68030
   (which I gather Sun never used). Pull the solder out of all the holes.
   Insert a 68030 socket. Take out your 68020. Put a 68030 (>= 20 MHz) in
   the 030 socket. That's it I think. I have heard that no jumpers need be
   set or traces cut.

Wrong. You need to wire up CIIN* on the 68030 to a place that I have
not fully determined yet (there are three possible places), and you also
have to make 6 kernel binary patches to make the data cache work.

A 68030 is only about 2% faster than a 68020 unless you turn it's data cache
on -- in which case it is up to about 15% faster. But, if you turn on the
data cache, you need to make DAMN sure that CIIN* on the 68030 is wired up
properly. I've mailed very detailed instructions to one person who I think
is going to try it out... I only have one 3/60 which I need up all the time,
so I cannot really try what I've found out.. We'll let people know (by
posting) when/if we find something that does work.
 <tdr.
--

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