📄 h51s.asm
字号:
ORG 0540h
HA1S: MOV A,#00H
HA1S1: JB P3.3,HA1S1
MOV R2,#20H
LCALL DELAY
JB P3.3,HA1S1
HA1S2: JNB P3.3,HA1S2
MOV R2,#20H
LCALL DELAY
JNB P3.3,HA1S2
INC A
PUSH ACC
CPL A
MOV P1,A
POP ACC
AJMP HA1S1
DELAY: PUSH 02H
DELAY1: PUSH 02H
DELAY2: PUSH 02H
DELAY3: DJNZ R2,DELAY3
POP 02H
DJNZ R2,DELAY2
POP 02H
DJNZ R2,DELAY1
POP 02H
DJNZ R2,DELAY
RET
END
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