sanjiaobo.asm

DAC0832显示波形

     ORG 0
MAIN:MOV A,#00H
     MOV DPTR,#0FEFFH
	 MOV R6,#0FFH
LOOP:MOVX @DPTR,A
     INC A
	 ACALL DELY
	 DJNZ R6,LOOP
	 MOV A,#0FFH
	 MOV R6,#0FFH
LOP1:MOVX @DPTR,A
     DEC A
	 ACALL DELY
	 DJNZ R6,LOP1
	 SJMP MAIN
DELY:MOV R7,#20
     DJNZ R7,$
	 RET
	 END