; Harcode MC8051 Looping Code done by Zulu & Grey of Rebels

        DEFSEG LED,start=0000H,CLASS=CODE

        SEG    LED

START:  setb    p1.6
        mov     c,p1.6
LOOP:
        cpl     c
        mov     p1.6,c
        mov     A,#4
        mov     r0,a
loop0:
        cpl     c
        mov     p1.7,c
        cpl     c
        mov     p1.5,c
        mov     A,#255
        mov     r1,a
Loop1:
        mov     a,#255
        mov     r2,a
Loop2:
        djnz    r2,loop2
        djnz    r1,loop1
        djnz    r0,loop0
        ljmp    LOOP

        END