10		; Set initial state

CYCLE:		; Define the label CYCLE

test i 1	; Test input bit 379h:6 (Pin 10)
jz SIGNALED	; Jump if tested bit in zero state

shift +1	; Rotate state clockwise
goto CYCLE	; Goto the CYCLE label

SIGNALED:
shift -1	; Rotate state unclockwise
goto CYCLE	; Goto the CYCLE label