----- Original Message -----
From: Lucas Fenoll Molina <lucas.fenoll@LIBERTYSURF.CO.UK>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Thursday, February 08, 2001 1:16 PM
Subject: [PIC]:programming question


hi I would like to know what does this line of code thanks

btfsc STATUS,Z

-----

btfsc stands for "Bit test File and skip if clear"

In this case, the instruction is looking in a special file register, called
STATUS, that stores flags describing the result of a previous instruction.

The Z part indicates that the instruction is looking at a bit called "Z" in
the STATUS register.

This bit is set if the result of the previous operation was zero, and is
clear otherwise.

A much simpler mnemonic, that is actually the exact same instruction at the
machine language level is:

    SKPNZ

For "Skip if not zero".

Bob Ammerman
RAm Systems
(contract development of high performance, high function, low-level
software)

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