PIC's ports individual bits manipulation - how to?

[skimask]

    for Digit = 0 to 3
        value_d = value dig digit
        lookup value_d, [$7E,$0C,$B6,$9E,$CC,$DA,$FA,$0E,$FE,$DE], Segments
        PORTA.0(Digit) = ~DCD Digit
        PORTB = Segments
    next

I'm not so sure that ~DCD Digit will work. I could be wrong. Maybe: ~ (DCD Digit) ?
And I don't see an initial 'ENABLE' in the program itself...not sure if that's needed either or if interrupts are 'ENABLE'd by default.
Ha...just found the answer to that last 'not sure'. Page 183 of the PBP manual states that interrupts are NOT enabled by default...so, you have to turn them on.