In Search of 15C+ ROM image

[Divasson]

(07-19-2022 11:45 AM)J-F Garnier Wrote:  

(07-19-2022 11:14 AM)Divasson Wrote:  For some unknown reason, after clearing the matrices with MATRIX 0 the calculator has reverted to old memory size (from 30-163 to 30-35: it kept my register allocation). It had not happened before. On and off or playing the self test did not work to restore the full memory.

I have reprogrammed it again and it works. I have tried to reproduce the error again to no avail: it still keeps the memory allocation as expected.

Has it happened to anyone of you?

Are you sure you actually cleared the matrices with MATRIX 0, since the difference is just 128 registers = 2 8x8 matrices.
Maybe the MATRIX 0 keystroke bounced.
If you experiment it again, check with RCL MATRIX A etc that the matrices are actually cleared.
And you don't need to reprogram, just reset the 15C LE with the ON - sequence.

I never experimented such behavior with the (patched) HP emulator, I can't say for sure for the 15C LE since my machine is not patched, yet.

J-F

I also wondered if that was the case since the size was the same - but both a and b matrices returned as 0 0 after the MATRIX 0 command. Like the memory space had not been reclaimed. Still, it happened only once this morning and the calculator works wonderfully before and after, otherwise.