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DIMM board RAM

Posted: Mon May 16, 2011 6:50 pm
by OldFoo
Just a quick question. I know the Sega DIMM RAM is SDRAM, but what are the requirements? I mean like:
  1. RAM Speed

    Any specific type

    Max amount of RAM per slot

    Max RAM on device

    Does RAM need to be in both slots

    ect...
And any others of course.

Posted: Mon May 16, 2011 7:16 pm
by OldFoo
pc100/pc133, max 512MB total (so, 2 x 256MB), non-ECC memory.

Posted: Wed May 18, 2011 4:38 am
by OldFoo
I think the max is 256MB per slot, and you can run using only one RAM slot. I think the minimum needed is 128MB total. It may have troubles with the really high density SDRAM (I.E. a 256MB stick with only 8 chips) from the Athlon era, but I haven't tried. If you have Pentium 1-Pentium 3 era systems laying around, you should be able to find sticks that will work.

Posted: Thu May 19, 2011 6:17 pm
by OldFoo
When put on the Naomi system, the Dimm (3.14 version) seems to not want to report anything above 512MB. However, the same Dimm installed in a Chihiro will accept 1024MB.



Interesting, eh? :smt047