Interrupt Handler and Context Saving

[LGR]

Tricksy optimizer is tricksy.

[Rotary_Ed]

Boy, have I learned that is so true. Well, at least next time I hope to be somewhat wiser in case of a problem by checking the code to see what Isn't there - as well as what is.

[LGR]

One thing that I've gotten in the habit of doing is if something is behaving inexplicably, look at the stats and the ASM. If something's missing, think optimizer.

[Rotary_Ed]

Good habit for sure. Don't know why I checked IF statements, memory addresses to IC registers, clearing of the flag, etc, etc.

I think I had checked clearing the buffer off my mental checklist and with such a very simple operation - I mean what could possibly go wrong

But, in any case, it taught me that I can not completely trust the compiler to do what my code is telling it to do.

Lesson learned number 2010