On Wed, 14 Jun 2000, Dave R. wrote:
> Since the SCPU list is being a pain in the butt, I'll run this by you guys...
>
> *sigh*
>
> I bought two 72-pin SIMMs last week, one EDO, one fastpage, both 16mb 70ns.
> Put the EDO (which is what it wants) in my Lexmark printer and it says it
> only sees 8mb. Put the fastpage in there. Same thing. But I doubt you can
> help me with that...
Lexmark printers are very specific about the size of memory they can
address in one slot. There is no way to get around it. It is a
limitation in the addressing circuits. Also, the addressing for the slots
is not idientical. Some of the slots will address higher capacity SIMMs
than others. Call 1-800-LEXMARK for help or see their web page
www.lexmark.com.
> I then put the fastpage in my SuperCPU. It boots up saying 16mb. Wheels
> doesn't want to boot...("System Error near $04B5"). SuperRAMTest gets all
> the way through the bit fill pattern test, but fails the block/page
> addressing test immediately. Same story for the EDO, but that was to be
> expected.
There is more to matching SIMMs than size, speed and page mode. There is
also refresh interval and refresh addressing to consider, among others.
Sounds like your SIMMs are not refreshing properly. See www.kingston.com
for their memory index, although I doubt the SCPU will be listed.
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