HP-15C CE woes: 1 bug, 2 limitations, 3 questions

[J-F Garnier]

(08-11-2023 08:10 AM)Thomas Radtke Wrote:  

(08-11-2023 06:52 AM)Didier Lachieze Wrote:  It has been done at least for the Android goxx emulators (go15c, go25c, go34c …).
Of course it cannot be done on the 15C CE 7-segment display but SwissMicros could have done it on the DM15L and it’s dot-matrix display.

Ah ok, I've only had the small DM15. Yes, very difficult to do on a 7-segment display, but a lot of codes would work straight like RCL, STO, LBL, GTO, GSB and many others.

Yes, many can be obtained with 7 segments only, but not the very commun + , ÷ , x and the many functions involving x: x<>y, e^x, y^x.

A 41C-type 14-segment LCD in needed, or better a 32S-type dot-matrix LCD.
So definitively out of the scope of the 15c CE project, but could be done on the DM15L.

BTW, the (excellent) little PX15C emulator made by agarza displays the symbolic function name on top (!) of the regular keycodes.

J-F