From: Jerry Kemp (sun@sun.twlight.net)
Date: Thu Sep 19 2002 - 09:44:02 EDT
Thanks to everyone who has emailed me hints so far, especially Willie
Flint, who was able to email me a pdf of the AXi manual, and to Tom
Schmidt, author of the memconf utility.
To date, I have determined that all (4) of my dimms are 11 bit dimms.
Per the manual and everyones suggestion, I have moved all dimms to slot
0 and 2. It does not matter what combination I place the dimms into
the system in ( i.e. 64Mb in slot 0 and 128Mb in slot 2 or 128Mb in
slot 0 and 64Mb in slot 2), anytime that the 128Mb dimms are in the
system, the systems sees the (2) 64Mb dimms as 32Mb dimms.
TIA to any additional pointers than anyone can provide or any
additional URL's where I can RTFM.
Jerry kemp
sun@twlight.net
Begin forwarded message:
> From: Jerry Kemp <sun@sun.twlight.net>
> Date: Tue Sep 17, 2002 12:14:46 PM US/Central
> To: sunmanagers@sunmanagers.org
> Subject: memory upgrade problems on Sun AXI 300
>
> Hello,
>
> I have an AXi system that shipped with 128Mb ram (64Mb 168 bit dimms x
> 2) and I needed to up the memory on this system. I made a purchase
> from eBay for a 256Mb upgrade kit. The kit consisted of (2) 128Mb 168
> bit dimms.
>
> After installing the dimms and powering on the system, the OBP
> reported 320Mb of ram where I was expecting 384. 384-320=64 - Using
> this logic, even though it didn't make sense, I figured I must have
> done something to one of my original 64 Mb dimms. I re-opened the
> case and reseated all of the memory then re-booted. Still 320Mb ram.
>
> Approaching this from the operating system, I ran a utility called
> memconf that I found here:
>
> <http://www.webpak.net/~tschmidt/unix.html>
>
> memconf reported this:
>
> =======================================================
>
> sun# memconf
> hostname: sun
> SPARCengine(tm)Ultra(tm) AXi (UltraSPARC-IIi 300MHz)
> socket U0404 has a 32MB DIMM
> socket U0403 has a 32MB DIMM
> socket U0402 has a 128MB DIMM
> socket U0401 has a 128MB DIMM
> empty sockets: U0304 U0303 U0302 U0301
> total memory = 320MB
> sun#
>
> =======================================================
>
> The system is now seeing my (2) original 64Mb dimms as 32Mb dimms.
> The manual that came with my AXi system does not go very deep into
> memory other than identifying memory banks 0,1,2,3.
>
>
> Can anyone explain to me what I have done to my system?? Other than
> only reporting 320Mb ram, everything appears to be working normally.
>
> Thanks,
>
> Jerry
> sun@twlight.net
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