This is one way to write an OR function with two operators.

In this case REG,2 will be set if REG,0 is 1 OR REG,1 is 0.

And yes, the second word in a 2-instruction word will always be executed as a 
NOP if it is executed by itself (jumped to or skipped to).

/Ruben
<http://rjjournal.zapto.org>

> Hi all,
> I have a question regarding to consecutive btfsX statements.
> For example:
> 
> btfss REG, 0
> btfss REG, 1
> bsf REG, 2
> 
> now obviously when REG,0 is 0 then REG,1 is evaluated as expected, but
> what happens if REG,0 is 1? Is bsf REG,2 executed, or is it evaluated
> as a NOP?
> 
> The processor is an 18F452, though I'm not sure that's relevant. I
> checked the description for BTFSS, and it says that if it's a "skip"
> followed by a 2-word instruction, it is followed by 2 NOPs. But does a
> conditional followed by a 1-word instruction become a 2-word
> instruction? I think not, but I'm not sure.
> 
> Thanks,
> - Marcel
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