HP-25C Eumulator
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10-24-2014, 11:34 AM
Post: #56
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RE: HP-25C Eumulator
(10-24-2014 08:48 AM)Harald Wrote: When do you write to flash? Looking at the hardware design there is probably not enough time to do this at power down.You are right. Currently I save when PGM/RUN switch toggles back to RUN. Power-down save would require a design change by adding a capacitor to give residue power when going power-off. (10-24-2014 08:48 AM)Harald Wrote: I think sharing the program memory between 33c and 25c is not a good idea. I personally have no problem with loosing the registers. Alternatively you could limit the emulator to just one of the rom images.I agree w/ you. Anyway the current design does not allow for this. (explain above). (10-24-2014 08:48 AM)Harald Wrote: I am no expert on the 33c. In fact I have never seen one at all.Thanks for catching this one. Must be a typo on the key mapping table. I really just test the basics on the 33C, like only the trig functions and such. I will post notify here after doing the minor fixes and checking-in on github. I hope you are acquiring means to re-program yours. |
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