I want to use portA to read two switches for one project and four
switches for another.  How do I make each bit rotate through the carry
flag consecutivly.  I have been using the following code, but it only
reads the first bit. I am using a 16c56


             movlw         0x0F
             tris              PORTA
             movlw         0x00
             tris              PORTB

input      bcf              STATUS, C
             rrf               PORTA, W
             btfsc            STATUS, C
             goto             code_1
             rrf               PORTA, W
             btfsc            STATUS, C
             goto             code_2
             goto             input

I was able to write the rest of this program and simulate it with
success and I have been stareing at this part for four hours with no
luck.

Scott