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HP Forum Archive 18

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New Article: HP 41C Service/ Diagnostic ROM Versions
Message #1 Posted by Allen on 10 Mar 2008, 12:39 a.m.

Greetings, Despite the time change, I'm finally getting around to some articles:

Making sense of all the 41c Service ROM versions: 1A 1C 1D 2A 2B

Article Includes photos of three Service ROMs (2 live and 1 EPROM), along with advantages of each ROM and PDF version of Key-maps.

I am working on converting some Original HP41 DEMO programs into Bar-codes. Will post separately once complete.

      
Re: New Article: HP 41C Service/ Diagnostic ROM Versions
Message #2 Posted by Mad Dog ebaycalcnut on 10 Mar 2008, 10:24 p.m.,
in response to message #1 by Allen

Hi Allen,

Which one do you use typically?

Edited: 10 Mar 2008, 10:28 p.m.

            
Re: New Article: HP 41C Service/ Diagnostic ROM Versions
Message #3 Posted by Allen on 10 Mar 2008, 11:07 p.m.,
in response to message #2 by Mad Dog ebaycalcnut

I find the ET-11966 to be the most useful. My SM2A is hosted on an HHP Eprom box, which unfortunately limits it's utility since the card reader takes up Pages 4, E,and F- Most of the module tests that are added to the SM2A all default to Pages E/F for their test source. Kind regards, Al


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