Michael, your sample code will ALWAYS set carry on.  Plus, if the carry
flag starts off cleared, it will test to see if cleared (which it is), then
will test to see if it is set, which is unnecessary, since you already know
it must be cleared.

Martin R. Green
elimar@bigfoot.com

----------
From:   Michael S. Hagberg[SMTP:mhagberg@MAIL.PRIMARY.NET]
Sent:   Sunday, September 28, 1997 12:43 PM
To:     PICLIST@mitvma.mit.edu
Subject:        Re: Complementing Carry

<SNIP>

to complement any bit you can do the following. note: the carry bit (bit 0)
is in the status register (ram location 3).

        btfsc   3,0     ; status,c
        bcf     3,0
        btfss   3,0
        bsf     3,0

what instruction was used to place the data into 'w'. if it didn't set
the zero flag you could use this

        iorlw   0       ; sets the zero flag if 'w' is zero

michael