> 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.

And the various SKIPs, and direct writes to PCL.

> 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.

Not sortof, they *are* relative to the PC.

> 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)?

BRA is preferable if the target is within the +-2Kbyte range.  Generally,
use BRA and RCALL within a module, and GOTO and CALL between modules.  If
the BRA or RCALL target is out of range, the assembler will let you know.


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