HP Forum Archive 06

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HP-42S different versions? Message #1 Posted by Johnny Bjoern Rasmussen on 19 Sept 2001, 5:36 a.m. Hi In my HP-calculator collection I have two different looking HP-42S's; one with black edge around the dislay, and one with blank edge. The selftest on both machines say version E, but they look different in the casing. How many different HP-42S were made? Thanks! Johnny

Re: HP-42S different versions? Message #2 Posted by J-F Garnier on 19 Sept 2001, 6:38 a.m., in response to message #1 by Johnny Bjoern Rasmussen Actually, I don't know what E stands for, maybe English? Some business machines (like HP17BII) were available in two versions: english and international (with choice of language). But not the HP42S. To get the ROM revision, do: EXIT-LOG to enter the test mode, <- to enter the memory browser, '.' (decimal point) You will see the ROM version at the left of the display. There were 3 ROM versions: A, B, C.

Re: HP-42S different versions? Message #3 Posted by Vieira, Luiz C. on 19 Sept 2001, 8:36 a.m., in response to message #2 by J-F Garnier I do not know if Mr. Johnny is aware about the memory browser, so, if I may... Please, do not attempt doing more than what's mentioned by Mr. Garnier; the memory browser allows directly writing over memory contents and consequences may not be welcome... There is some about the memory browser to be read, but I do not remmember the address :-( Best regards.

Re: HP-42S different versions? - HP42's data Message #4 Posted by Vieira, Luiz C. on 19 Sept 2001, 8:50 a.m., in response to message #2 by J-F Garnier Here it is. http://www.finseth.com/~fin/hpdata/hp42s.html The author of the page mentions the commands of the memory browser under Bugs/ROM Versions: If you wanna try to have a look, it's good reading.

Re: HP-42S different versions? Message #5 Posted by Todd Garabedian on 19 Sept 2001, 10:20 p.m., in response to message #1 by Johnny Bjoern Rasmussen Well, from a physical standpoint, there are two versions, each with slightly different displays. One has a display with a metal surround that is almost flush with the glass. The other version has a screen that is almost recessed... the surround is raised compared to the screen itself. I'm told that the recessed version is rarer. Todd

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