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Article #2685

Re: SS20 RAM slot ordering?

#2685
From: Craig Dewick
Date: Thu, 17 Feb 2000 00:00
47 lines
2115 bytes
batz@straylight.passport.ca ( batz ) writes:

>We have an SS20 using 8 cms-ultra2-128 rev A by Camincom. 
>The rom revision is 2.22.1H . 

I'm not sure what the cms-ultra2-128 is, but I presume it's a 128 meg RAM
module? 

If yes, then you are probably going to find that it won't work since Sparc
20's will only support 16, 32 and 64 meg SIMM's.

>Is there a boot prom FAQ anywhere? I could't find one. 
>I'm sure it will be in the last place I look for it. ;) 

Hmm, I don't know of one. The last bootROM revision for the 20's was 2.25,
and I have a downloadable image of it available from my bootROM archive at:

http://lios.apana.org.au/~cdewick/data/bootroms.html

>It doesn't seem to be recognizing the SIMMS as being inserted
>in the slots they have been. When I individually test each
>of them, they work. 

The correct insertion order is as follows:

 [ edge connectors ]

  SIMM 0
  SIMM 2
  SIMM 5
  SIMM 3
  SIMM 6
  SIMM 1
  SIMM 7 (or VSIMM 0)
  SIMM 4 (or VSIMM 1)

 [ Sbus/Mbus connectors ]

Regards,

Craig.

--
    Sun Ripened Kernels    |  Surplus and Pre-loved Sun Microsystems Equipment
  http://www.sunrk.com.au  |  Based in Waterfall (S/E Sydney), NSW, Australia.
    Phone: 02-9520-2547    |     Founded in 1996 - Operated by Craig Dewick
     GSM: 04-1115-8574     |   Email: craig@sunrk.com.au or craig@zeta.org.au
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From: cd@lios.apana.org.au (Craig Dewick)
Subject: Re: SS20 RAM slot ordering?
Date: 2000/02/17
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