?? 164.asm
字號:
org 00h
mov scon,#00000000b
start:mov dptr,#table
loop:clr a
movc a,@a+dptr
cjne a,#03,a1
jmp start
a1: cpl a
mov 30h,a
mov sbuf,30h
loop1:jbc ti,loop2
jmp loop1
loop2: call delay
inc dptr
jmp loop
DELAY: ; 延時程序
MOV R5,#255
D3:MOV R2,#255
D4: DJNZ R2,D4
DJNZ R5,D3
RET
RET
table : db 01h,02h,04h,08h
db 10h, 20h,40h,80h
db 01h,02h,04h,08h
db 10h, 20h,40h,80h
db 80h,40h,20h,10h
db 08h, 04h,02h,01h
db 80h,40h,20h,10h
db 08h, 04h,02h,01h
db 00h,0ffh,00h,0ffh
db 03h
END
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