> Newbie needs help. Below is my practice code. My Question is How come
> that this run does not stop at idle. Everytime I put low or ground on
> porta RA3 the led turns on then off  again. And if I ground RA3 again
> led turns on again. Looking at the code, I thought after the led turns
> on program goes to idle and stays there. I'm probably missing
> something simple here. Thanks for the help.

                            w equ 0                            f equ 1
                            porta equ 0x05
                            portb equ 0x06

start                     movlw 0xff
                            tris porta
                            movlw b'11111011'
                            tris portb
                            bcf portb,2                  ;clear portb
RB2
switch                 btfss porta,3                ;check porta RA3 if
low
                             goto switch                ; not low -loop
back to switch
                             bsf portb,2                ; turn on led
idle                      goto idle
                             end