我在学习汇编语言,照着51单片机视频的例子来写的程序,烧录后出现程序有时候会自己跑飞,这个是那里问题?请各位大神指点下?
代码如下:
ORG 000H
SJMP MAIN
ORG 030H
MAIN:MOV R0,#0FFH
MOV R2,#16
MOV DPTR, #TAB
LOOP:INC R0
MOV A ,R0
MOVC A,@A+DPTR
SHOW:MOV P0,A
LCALL DEY
DJNZ R2,LOOP
SJMP MAIN
DEY:MOV R7,#20
D1: MOV R6,#240
D2: MOV R5,#160
DJNZ R5,$
DJNZ R6,D2
DJNZ R7,D1
RET
TAB:DB 001H,003H,007H,00FH,01FH,03FH,07FH,0FFH
DB 0FEH,0FCH,0F8H,0F0H,0E0H,0C0H,080H,000H
END
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