HP Forum Archive 03

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HP-37E chip placement Message #1 Posted by Erik Wahlin on 28 July 2000, 2:37 p.m. I am working on a HP-37E that had previously been dis-assembled. The calculator has one large chip (CPU) and one small chip. First question is: Did this calculator only have one of the small chips? Second question: There are three possible slots for the small chip. Does anyone know it's correct position. Thanks alot!

Re: HP-37E chip placement Message #2 Posted by Hugo on 28 July 2000, 9:06 p.m., in response to message #1 by Erik Wahlin I have a 38E that as 1 big chip and 3 little chips. So I assume that yours should have also 3 little chips. Hugo

Re: HP-37E chip placement Message #3 Posted by Thibaut on 21 Aug 2000, 8:47 a.m., in response to message #2 by Hugo I've just opened my 37E and confirm that there is a little and a big chip.

Re: HP-37E chip placement Message #4 Posted by Eric Smith on 28 July 2000, 10:17 p.m., in response to message #1 by Erik Wahlin As far as I can tell, the small chips in the HP-3xE calculators can go in any slot, as they're all wired the same. However, don't install them backwards! Each small chip is a combination ROM & RAM. I'm not sure how many a 38E needs, but I suspect it's more than just one, since the 38E is the high-end financial.

Re: HP-37E chip placement Message #5 Posted by Erik Wahlin on 29 July 2000, 12:27 a.m., in response to message #4 by Eric Smith Thanks for the replies. I also have a HP-38E that has three small chips. That is what made me wonder if my HP-37E should have more than one chip.

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