; Hardcore MC8051 Led Handling Code done by Zulu & Grey of Rebels

        DEFSEG LED,start=0000H,CLASS=CODE

        SEG    LED

START:  setb   p1.6
        clr    p1.5
        clr    p1.7
        clr    p1.4

        mov     c,p1.6
LOOP:
        setb    p1.6
        clr     p1.6
        ljmp    LOOP

        END