?? lcdxsa.asm
字號:
ORG 0000H
LJMP MAIN
ORG 0100H
MAIN:
BUSY EQU P2.0
REQ EQU P2.1
CLR REQ
SETB BUSY
MOV A,#0F0H
ACALL SUB1
MOV A,#02H
ACALL SUB1
MOV A,#00H
ACALL SUB1
MOV A,#10H
ACALL SUB1
MOV A,#01H
ACALL SUB1
SJMP $
SUB1: JB BUSY,SUB1
MOV P1,A
NOP
SETB REQ
HE3: JNB BUSY,HE3
CLR REQ
RET
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