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[SS20] bank question

Discussion in 'Sun Hardware' started by Claus Dragon, Nov 14, 2003.

  1. Claus Dragon

    Claus Dragon Guest

    Hello everyone,

    The SparcStation 20 I am using has two 501-2480 64MB DIMMS and four
    501-2622 32MB DIMMS, adding up to 256 MB of RAM.

    Now, in order to have all 6 chips run and be recognized, I had to use
    not the normal bank order but a weird thing, banks 0-3 and 6,7. That
    was a bit weird, but still ... could be that something like the other
    banks being dirty or so... no matter.

    Now, in order to seat an SBUS card properly in slot 1, I had to remove
    the DIMM in bank 7. I placed the card in, rebooted to see whether it
    worked, got the appropriate result (it worked, with 224 MB of RAM).
    then I powered off the system again, added the chip again and powered
    up again. Its not being recognized anymore, although its exactly the
    same chip on exactly the same bank as before.

    Why oh why is this happening? the OBP memory tests did not say that
    anything was wrong, its simply as if the chip were not there.

    What do I miss?


    Claus Dragon, Nov 14, 2003
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