Hi,

while I4m not sure if this was the original question:

My problem was to simply rotate a 8-Bit Value.

I came to this solution:

        rrl     FLAG, F         ;msb -> carry
        bcf     FLAG, 0         ;to be sure new LSB = 0 ( trash unknown former c
arry )
        skpnc                   ;former MSB now in carry
        bsf     FLAG, 0         ;carry was set - so set LSB

or for  rlf

        rlf     FLAG, F         ; lsb -> carry
        bcf     FLAG, 7         ; trash unkown old carry
        skpnc                   ; former lsb now in carry
        bsf     FLAG, 7         ; modify MSB according carry

comments ?

Kind regards

        Stefan Sczekalla-Waldschmidt
        ssw@oikossw.de