12c clr reg not programmable, why?

[rprosperi]

(01-05-2020 03:01 PM)Dave Britten Wrote:  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.

A very intuitive and clear to grasp icon, but hard to get that into the small space available.

However, a small mushroom cloud could just fit, and probably convey the same.