>Why I should not use BSF & BCF on Port Pins? Is it only recommended in this
>case to make sure that both pins are zero at the same time?

That's one good reason.

Another is that the output you are driving is trying to pull your signal in
the other direction, and a BSF/BCF does a read before writing
(read/modify/write).  That would cause you to read the opposite of what you
want, change the bit you want changed (a different bit), then write the
updated (and partially incorrect) value back to the port.

Andy

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Andy Kunz - Montana Design - 409 S 6th St - Phillipsburg, NJ 08865
          Hardware & Software for Industry & R/C Hobbies
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