From: pen@lysator.liu.se (Peter Eriksson)
Subject: Re: 386i SIMMs in 3/80?
Organization: Lysator Academic Computer Club, Linkoping University, Sweden
Date: Thu, 30 Jul 1992 01:11:22 GMT

paulr@umbc4.umbc.edu (Paul Riddle) writes:

>Hi everyone,

>Awhile back I posted to this group asking for opinions about using a
>3/80 as a diskless client server.  The general consensus was that it
>would work adequately, but it would help to upgrade the 3/80 from 8
>meg to 16 meg of memory.
...
>So, last week we stripped a couple of 386i's we had lying around for
>parts, and I ended up with a bunch of extra 1-meg SIMMs.  I decided to
>go ahead and try putting 8 of them in my 3/80 to max its memory out at
>16 megs.

>To make a long story short, it didn't work.  After installing the
>SIMMs (which filled up every bank on the board) and powering the
>machine on, it just sat there in test mode (blank screen, green light
>on the front blinking on and off) forever.  I removed the SIMMs and
>everything worked fine again.

>Does anyone know what's wrong?  The SIMMs are of the same type (same
>numbers on the chips).  I double checked to make sure they were all
>seated properly.  Could one of them be bad, or are there jumpers I
>have to set somewhere, or are they simply not compatible?  I didn't
>have much time to fool around with the machine, since it serves one of
>our labs and several faculty machines.

According to my "Sun-3/80 Main Memory Expansion Module Installation
Manaul" you shouldn't have to change any jumpers when you install
more memory. If the SIMMs are the same as the ones that was sitting
in the machine then it should work...

Btw, I just noticed that a 3/80 can take a standard 3.5", 1.44MB
drive. Atleast I can't see any difference between the one that has
one install (by Sun) and our four other 3/80's.

Below are included some information I received when I asked about
installing 4MB SIMMs in a 3/80. Imaging a 3/80 with 64MB RAM.. :-)

>Any thoughts would be helpful.  Thanks,
>Paul

/Peter

>-- 
>If found, please return to:         |
>Paul Riddle                         | paulr@umbc3.umbc.edu
>UMBC, Academic Computing Services   |
>Baltimore, MD 21228                 | (410) 455-3627

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From sqwest.wimsey.bc.ca!mch@wimsey.bc.ca Mon Jul 20 23:34:10 1992
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Date: Mon, 20 Jul 92 14:27:56 PDT
From: mch@sqwest.wimsey.bc.ca (Mark C. Henderson)
Message-Id: <9207202127.AA24102@sqream.west.sq.com>
To: pen@lysator.liu.se
Subject: Re: 4MB SIMMs in a 3/80
Newsgroups: comp.sys.sun.hardware
Organization: SoftQuad Inc., Surrey, British Columbia, CANADA
Cc: 
Keywords: sun3-80

The answer seems to be that if you have ROM revision 3.0.2 or higher, you
can do this, otherwise not.

I haven't verified this from experience.

Mark

-- 
Mark Henderson, SoftQuad Inc, 108-10070 King George Hwy, Surrey, B.C. V3T 2W4
Internet:   mch@west.sq.com, mch@sqwest.wimsey.bc.ca
UUCP: {van-bc,sq}!sqwest!mch Telephone: +1 604 585 8394  Fax: +1 604 585 1926

From eirik@db.TC.Cornell.EDU Wed Jul 22 12:25:41 1992
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From: eirik@TC.Cornell.EDU
Message-Id: <9207221025.AA16714@db.TC.Cornell.EDU>
To: pen@lysator.liu.se (Peter Eriksson)
Subject: 4MB SIMMs in a 3/80
Keywords: sun3-80


According to someone I know:

    If the MB is part #501-1650, it can use 4Mbyte SIMMs.
    PArt #501-1401 only if it's rev 3.1 or higher. (or is that 3.3...)

From wwtz@ciba-geigy.ch Wed Jul 22 12:34:12 1992
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Date: Wed, 22 Jul 92 12:06:10 +0200
From: wwtz@ciba-geigy.ch (Wolfgang Wetz)
Message-Id: <9207221006.AA12413@cgchx.wirz.cigy>
To: pen@lysator.liu.se
Subject: Re: 4MB SIMMs in a 3/80
Newsgroups: comp.sys.sun.hardware
Organization: Ciba-Geigy Ltd., Basel, Switzerland
Cc: 
Keywords: sun3-80

In article <1425@lysator.liu.se> you write:
>Anyone know if it is possible to install 4MB SIMMs in a Sun 3/80?
>According to the docs I have this shouldn't be possible (or rather, it
>simply doesn't say anything about it - it just describes how to install
>1MB SIMMS) but since the CPU-board design looks pretty modern and the SS1
>cards can take 4MB SIMMS I was hoping...
>

Yes, under certain conditions it's possible to install 4 meg SIMMs in 3/80s:
you need to have Boot PROM Rev. 3.0.1 or later. The 4 meg SIMMs must come
first. Please note, that this is not a supported Setup by Sun Micro; they
say: don't do it. I've seen that it did'nt work with Boot PROM 3.0.2 - so
you're on your own.

-- 
Wolfgang Wetz, Systems Manager
***  CIBA-GEIGY AG, R-1045.P.24, P.O.Box, CH-4002 Basel, Switzerland  ***
E-mail: wwtz@ciba-geigy.ch - Phone: +4161 697 54 25 - Fax: +4161 697 87 72
--
Peter Eriksson                                              pen@lysator.liu.se
Lysator Academic Computer Society                 ...!uunet!lysator.liu.se!pen
University of Linkoping, Sweden                           I'm bored. Flame me.
Newsgroups: comp.sys.sun.hardware