I know there are several service ROMs for the HP-41. I got some lists from other collectors, but they all listed them as "service ROM" or "test ROM". I am a little bit confused and want to get a full overview of these takeover ROMS. All service ROMs can be tested: Plug in the module, start the calculator and press the "9" key. Then the module will test iteself and give you a code as "SM: 1A". This is the exact type of the module.
So please, all you collectors that own a original or copy of a service ROM, please test it ans let us know, which service module exists and how do you call them.
Matthias