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        .equ    p6ddr,  0xffb9          ;0x7f for output 

        .equ    p6dr,    0xffbb

        .equ    seed,    0x01

        .text

        .org    0

reset:  .word   main            ;reset vector 

;

        .org    0x400

main:   mov.b   #0x7f,r0l       ;port 6 ddr = 7F 

        mov.b   @0xffbb:8,r0l   ;***test***

        mov.b   r0l,@p6ddr:16

;

        mov.b   #seed,r0l       ;start with 0000001

loop:   mov.b   r0l,@p6dr:16    ;output to port 6 

delay:  mov.w   #0x0000,r1

deloop: adds    #1,r1

        bne     deloop:8        ;not = 0

        rotl    r0l

        bra     loop:8

        .word   0