Ok, odd subject, admittedly. I'm a bit confused by the various methods
of program control on the 18F. On the 16F it's easy, GOTO and CALL. But
with the 18F there's now BRA (Branch) and RCALL as well. Here is my
(likely wrong) understanding. GOTO and CALL use the full addressing,
which BRA and RCALL are sort of relative to the current PC value. As I
don't truly understand everything about the PC and it's cronies, I'm
likely wrong. In general though, what would be prefereable to use, say
in an ISR? I know not to use CAll or RCALL unless there will be a return
somewhere, but in an ISR is there an advantage to using BRA over GOTO
(in a small program anyways)?

Thanks,
Josh
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