>I have problem bcf,bsf,btfss,btfsc. The problem is that I want to have
> a variable bit position in these commands.
>        ex      bsf     PORTA,num            ; num is 0,1,2

        You cannot have a variable bit position in these commands.  The
        bit field is a fixed value only (it is hard coded into the command
        byte).

        Presumably 'num' in the above example is the name of a variable.
        MPASM is giving you an error because the bit field can only have
        a constant value in the range 0..7, and the constant value of
        'num' is the address of the allocated data byte in memory.

___Bob