HP-41CX Extended Memory Message #1 Posted by Jeff Davis on 18 Dec 2010, 8:19 p.m.
I was wondering since the extended memory modules do get rather expensive and are rarely found any more, is there any way to take an old Math pac, for instance as I have one that does not work, and remove the chip and then put together an Double Extended memory module. What chip was originally used? Is there a schematic for the Module anywhere?
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