Hans Blichfeldt wrote:

<SNIP>

> When you start operation, carry may or may not be set.
> Correct (secure) way is therefore:
>
> clrf    PORTB
> bcf     STATUS,C
> bsf     PORTB,0
>
> then: rlf  etc

I am just using the 12C50x parts right now (which is the older 12-bit core) but
none of
the instructions CLRF, BCF, or BSF clears the CARRY flag for those parts.

For my education, does one of these instructions clear the CARRY flag in the 14-
bit
parts?  Or am I just missing the point?

I would have used:
        CLRW            ; W = b'00000000', CARRY = ?
        ADDWF   W,W     ; W = b'00000000', CARRY = 0
and then done the rotate.

Am I wrong?  Did I miss something?

Michael

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