On Fri, 27 Aug 1999 18:58:41 -0700 Roger Johnson
<rogerjohnson@SEANET.COM> writes:
>I am looking for a code fragment which calcuates the two's >complemnt of
a 32 bit word (4 bytes)

        comf    var,f           ;Complement all bytes
        comf    var+1,f
        comf    var+2,f
        comf    var+3,f

        incf    var,f           ;Inc. low byte always
        skpnz                   ;Skip if no carry to higher bytes
        incf    var+1,f         ;Carry to next byte
        skpnz
        incf    var+2,f
        skpnz
        incf    var+3,f


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