tixingbo.asm

DAC0832显示波形

     ORG 0
START:MOV DPTR,#0FEFFH
STEP:MOV R6,#20H
	 MOV R4,#5
	 MOV A,#00H
LOOP:MOVX @DPTR,A
     ACALL DELY
	 ADD A,R6
	 DJNZ R4,LOOP
	 AJMP STEP
DELY:MOV R7,#200
DEL1:MOV R5,#200
     DJNZ R5,$
     DJNZ R7,DEL1
	 RET
	 END