标题:
走马灯汇编源程序
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作者:
xcc1500
时间:
2018-6-15 10:42
标题:
走马灯汇编源程序
走马灯汇编源程序
ORG 0000H
AJMP MAIN
ORG 0013H
LJMP IN11
ORG 0030H
MAIN: SETB EA
SETB EX1
CLR PX1
SETB IT1
MOV R1,#00H
SJMP $
ORG 0200H
IN11: INC R1
LCALL NEXT
RETI
NEXT: MOV A,R1
MOV B,#2
DIV AB
MOV A,B
JZ LOOP1
LCALL NEXT1
RET
NEXT1: MOV A,#0FEH
MOV R2,#8
DO: MOV P1,A
RL A
LCALL DELY1S
DJNZ R2,DO
RET
LOOP1: MOV A,#7FH
MOV R2,#8
NEXT2: MOV P1,A
RR A
LCALL DELY1S
DJNZ R2,NEXT2
RET
DELY1S: MOV R5,#5
D2: MOV R6,#200
D1: MOV R7,#248
DJNZ R7,$
DJNZ R6,D1
DJNZ R5,D2
RET
END
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