12c clr reg not programmable, why?

[Dave Britten]

(01-05-2020 03:36 AM)rprosperi Wrote:  Also, I just checked and confirmed the CLR REG operation also resets the user program counter, thus use in a program would be suicide as it would reset to line 00 and halt.

Yeah, if it goes completely nuclear and clears the registers, stack, and resets the program counter and halts, then I definitely can't see any good use for it inside a program. But then one wonders why the command is labeled "CLR REG"; maybe a little picture of a frustrated accountant sweeping everything off the desk into the trash would be a better choice.

(01-05-2020 09:51 AM)Csaba Tizedes Wrote:  I can imagine a "SETREG" command on the future HP calcs with value ENTER from ENTER to SETREG syntax, which set the registers on the range Rfrom to Rto to value.

Doesn't the 41C Extended Functions have something similar? Or am I just thinking of the "copy a block of registers" command? In any case, you could implement it in just a few steps with ISG.