HP Forum Archive 20

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Disassembly of HP41C ROMs Message #1 Posted by Prabhu Bhooplapur on 8 June 2011, 11:22 p.m. Hi, I am looking for information on how to disassemble the plug in ROM modules of HP41C. Thanks, Prabhu

Re: Disassembly of HP41C ROMs Message #2 Posted by Eric Smith on 9 June 2011, 1:14 a.m., in response to message #1 by Prabhu Bhooplapur If you mean physically opening them, you'll generally need to use a sharp knife to cut them open, as they are ultrasonically welded. They are not intended to be opened. As they say, "no user serviceable parts inside." Of course, some of us aren't normal users.

Re: Disassembly of HP41C ROMs Message #3 Posted by exschr on 9 June 2011, 2:52 a.m., in response to message #1 by Prabhu Bhooplapur There is some information about opening the module in PPC Journal V6N7 (October 1979) I will email you a picture of the extract. Good luck Roger

Re: Disassembly of HP41C ROMs Message #4 Posted by Prabhu Bhooplapur on 9 June 2011, 3:23 a.m., in response to message #3 by exschr Thanks Roger and Eric.

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