ledss.asm

学习单片机一个简单程序和硬件的开发

 	ORG   0000H
	AJMP   MAIN
	ORG   0030H
MAIN:
	MOV   A,#0FEH
LP:  
    MOV   R0,#10
LP0: 
    MOV    P2,A
    LCALL  DELAY
    MOV    P2,#0FFH
    LCALL  DELAY
    DJNZ   R0, LP0
    RL     A
    SJMP   LP
DELAY:  MOV  R2,#10
DEL3:   MOV  R3, #100
DEL2:   MOV  R4,#250
DEL1:   DJNZ  R4, DEL1
        DJNZ  R3, DEL2
        DJNZ  R2,DEL3
        RET
        END