8802080913:
;***************************************;所有的燈逐漸從暗到全亮,再由全亮到暗;***************************************ORG0000HSTART:MOVR0,#01H ;延時次數置初值MOVR1,#00HMOVR2,#00000000B;燈控制字置初值MOVR3,#11111111BLOOP:MOVP0,R2;從暗到亮時輸出"0",亮燈;從亮到暗時輸出"1",滅燈MOVA,R0;延時次數暫存于ALOOP1:MOVR4,#10;延時DJNZR4,$DJNZR0,LOOP1INCA ;延時次數遞增MOVR0,AMOVP0,R3;從暗到亮時輸出"1",滅燈;從亮到暗時輸出"0",亮燈MOVA,R1;延時次數暫存于ALOOP2:MOVR4,#10;延時DJNZR4,$DJNZR1,LOOP2DECA ;延時次數遞減MOVR1,AJNZRTN ;達到最亮或最暗時,反轉燈控制字MOVA,R2CPLAMOVR2,AMOVA,R3CPLAMOVR3,ARTN:SJMPLOOPEND