PASM Toggle Bit

toggle.spin

DAT
              org       0
entry         mov       dira, #1                'set P0 as output
:loop         mov       count, delay            'setup delay
              xor       outa, #1                'invert P0
:here         djnz      count, #:here           'delay
              jmp       #:loop

count         long      0
delay         long      80,000,000              '1s delay (current clock speed 80MHz)