NEW: HP 15C Collectors Edition

[J-F Garnier]

(08-04-2023 03:41 PM)Gene Wrote:  Also memory is properly conserved from 15 to 15.2 mode. No problem.

From 15.2 to 15 mode, it is conserved as long as no ram was used in the area abound the 15 mode. Example, if you have a 15.2 program using 800 steps and switch to 15 mode, it will not properly conserve memory. Same with data registers.

It seems some are a few steps ahead of me on this topic :-) No mystery about that.
BTW, does 15.2 mean 15 with 2x the memory ? 15CII ?

But I can reproduce some funny effects on my emulator:
- in 15.2 mode create a 10x10 matrix to reduce the free registers to 74,
- switch back to 15 mode, and try MEM --> Error 10.
No crash ... Isn't it robust coding? I don't advise to stay in this situation, however.

Actually, once you are in the 15.2, 192-register mode, I see no objective reasons to go back to the nominal 96 register mode, except for tests.

J-F