>
> At 17:02 1998-01-29 -0600, you wrote:
> >Assuming the displays are common-anode, you'd use NPN transistors.  To drive
> >a digit, you set its common wire HIGH, set the appropriate segment wires LOW,
> >and let the other lines FLOAT.  If you want decimal points, then you can get
> >9 digits with 9 I/O pins.
> >
> Nice and Smart!
> We got to have different segment maps for each digit, but thats just
> porgramming

It's not even that bad.  Assuming you have the data for each digit stored
in the same format in bits 0..6 of Digit0..Digit7, and assuming the digits
are wired correctly, then you can show them with:

ShowD0:
        rlf     Dig0,w
        andlw   0xFE
        tris    PORTB
        retlw   0

ShowD1:
        rlf     Dig1,w
        xorwf   Dig1,w
        andlw   0xFC
        xorwf   Dig1,w
        andlw   0xFD
        tris    PORTB
        retlw   0

ShowD2:
        rlf     Dig2,w
        xorwf   Dig2,w
        andlw   0xF8
        xorwf   Dig2,w
        andlw   0xFB
        tris    PORTB
        retlw   0

etc.  One routine for each digit, but all digits can use the same character
bitmaps.