h515s.asm

来自「上课老师给的8086仿真器」· 汇编 代码 · 共 33 行

        ORG 0C80H
        MOV DPTR,#8000H
        MOV R6,#0FH
        MOV A,#55H
RAM1:   MOV R7,#0FFH
RAM2:   MOVX @DPTR,A
        CLR P1.0
        INC DPTR
        DJNZ R7,RAM2
        DJNZ R6,RAM1
        MOV DPTR,#8000H
        MOV R6,#0FH
RAM3:   MOV R7,#0FFH
RAM4:   MOVX A,@DPTR
        CJNE A,#55H,RAM6
        SETB P1.0
        INC DPTR
        DJNZ R7,RAM4
        DJNZ R6,RAM3
RAM5:   CLR P1.0
        CALL DELAY
        SETB P1.0
        CALL DELAY
        SJMP RAM5
DELAY:  MOV R5,#0FFH
DELAY1: MOV R4,#0FFH
        DJNZ R4,$
        DJNZ R5,DELAY1
        RET
RAM6:   SETB P1.0
        SJMP RAM6
        END