New firmware for the Swissmicros DM15L

[Helix]

Thank you for the update.
I agree that the behavior of the STO / RCL functions is not very intuitive. I would prefer a STO nm and a STO 0n format, without the need of ENTER. On the other hand, it’s not a big deal. Since flash memory is limited, the best solution is certainly the one that requires the least memory.

The g TEST function in program mode is brilliant! It’s especially useful for me, as there is no reminder on the back of the small DM-15 calculator.
The only very minor drawback on this version is that the two arrows are misplaced: the left arrow is between the 7 and the 8, and the right arrow is above the 9. I didn’t understand at first why they didn’t work
Perhaps a solution could be to enable the 9 key to behave like the CHS key, so that the firmware would be suited to both calculator formats. Again, it’s not mandatory.

Another very minor quirk: in program mode, the annunciators appear on both lines.
EDIT: this occurs when the label program has 2 digits. For example:
f LBL 10
g x²