【正文】 M LCALL PAGEFIRST MOV COM,LM LCALL LIEFIRST MOV R0,00H RETURN0:MOV A,R0 MOVC A,@A+DPTR MOV DAT,A LCALL PRD INC R0 CJNE R0,16,RETURN0 MOV A,YM INC A MOV COM,A LCALL PAGEFIRST MOV COM,LM LCALL LIEFIRST RETURN1:MOV A,R0 MOVC A,@A+DPTR MOV DAT,A LCALL PRD INC R0 CJNE R0,32,RETURN1 RETMUISC:MOV TMOD,01H MOV IE,82HSTART0：MOV 30H,00H。取簡(jiǎn)譜碼指針，初次30H=00 NEXT：MOV A,30H MOV DPTR,TABLE MOVC A,@A+DPTR。查表，首址（第0位）是52H MOV R2,A；R2暫存簡(jiǎn)譜碼，R2=52H JZ END0；取到結(jié)束碼（00H），跳至END0 ANL A,0FH；取低4位（節(jié)拍碼），A=02H MOV R5,A；節(jié)拍碼存于R5 MOV A,R2 SWAP A。交換高低4位，A=25H ANL A,0FH；取低4位（音符碼），A=05H JNZ SING；取到的音符碼為0嗎？不是跳至SING CLR TR0；是，則不發(fā)音 JMP D1 SING：DEC A；取到的音符碼，減1，A=4 MOV 22H,A RL A。乘2，A=8 MOV DPTR,TABLE1；到表TABLE1取T值，首址64260 MOVC A,@A+DPTR MOV TH0,A MOV 21H,A MOV A,22H RL A INC A MOVC A,@A+DPTR MOV TL0,A MOV 20H,A SETB TR0；啟動(dòng)定時(shí)器 D1：CALL DELAY；基本延時(shí)單位187毫秒 INC 30H JMP NEXT；取下一個(gè)簡(jiǎn)譜碼 END0：CLR TR0；停止定時(shí)器0計(jì)時(shí) JMP START1；跳到花樣燈子程序TIM0: PUSH ACC PUSH PSW MOV TH0,26H MOV TL0,20H CPL POP PSW POP ACC RETI START1:SETB IT0；系統(tǒng)初始化 SETB EX0SETB IT1SETB EX1SETB EAMOV A,0FEH；依次循環(huán)點(diǎn)燈LOOP:MOV P1,ALCALL DELAY1RL ALJMP LOOPINTER0:JNB ,S1；=0，切換到花樣燈1JNB ,S3；=0，切換到花樣燈2SJMP EXITS1:MOV R2,10；S2:MOV P1,00 LCALL DELAY1 MOV P1,0FFH LCALL DELAY1 DJNZ R2,S2；八只彩燈“亮—滅—亮”閃爍10次 SJMP S1 RETIS3:MOV R3,10S4:MOV P1,0AAH LCALL DELAY1 MOV P1,55H LCALL DELAY1 DJNZ R3,S4；八只彩燈從0、6到7交替閃爍10次 SJMP S3EXIT:RETIDELAY:MOV R7,02 ；節(jié)拍時(shí)間187毫秒 D2:MOV R4,187 D3:MOV R3,248 DJNZ R3,$ DJNZ R4,D3 DJNZ R7,D2 DJNZ R5,DELAY RET DELAY1:MOV R0,0FFH；延時(shí)D4:MOV R1,0FFHD5:NOP NOP DJNZ R1,D5 DJNZ R0,D4 RETTABLE1: DW 64260,64400,64524,64580 DW 64684,64777,64820,64898 DW 64968,65030,65058,65110 DW 65157,65178,65217 TABLE: DB 82H,01H,81H,94H,84H DB 0B4H,0A4H,04H DB 82H,01H,81H,94H,84H DB 0C4H,0B4H,04H DB 82H,01H,81H,0F4H,0D4H DB 0B4H,0A4H,94H DB 0E2H,01H,0E1H,0D4H,0B4H DB 0C4H,0B4H,04H DB 82H,01H,81H,94H,84H DB 0B4H,0A4H,04H DB 82H,01H,81H,94H,84H DB 0C4H,0B4H,04H DB 82H,01H,81H,0F4H,0D4H DB 0B4H,0A4H,94H DB 0E2H,01H,0E1H,0D4H,0B4H DB 0C4H,0B4H,04h DB 00H TAB: DB 　00H,0C0H, 30H, 1EH, 10H 10H, 10H,0FFH DB　 10H, 10Ｈ, 10H, 10H, 18H, 10H, 00H, 00H DB 　41H, 40H, 42H, 42H, 42H, 42H, 42H, 7FH DB 　42H, 42H, 42H, 43H, 42H, 60H, 40H, 00H　 DB 00H, 00H, 00H,0FEH, 82H, 82H, 82H, 82H DB 　82H, 82H, 82H,0FFH, 02H, 00H, 00H, 00H DB 　00H, 00H, 00H, 7FH, 20H, 20H, 20H, 20H DB　 20H, 20H, 20H, 7FH, 00H, 00H, 00H, 00H DB 　80H, 70H, 00H,0FFH, 10H, 20H, 10H, 10H DB 　0FFH, 10H, 10H, 10H,0F8H, 10H, 00H, 00H DB 　00H, 00H, 00H,0FFH, 82H, 42H, 22H, 1AH DB 　07H, 0AH, 12H, 22H, 43H,0C2H, 42H, 00H DB 00H, 80H,0C0H,0BCH, 84H, 84H, 84H,0F4H DB 82H, 82H, 83H, 82H, 80H,0C0H, 80H, 00H DB 00H, 40H, 20H, 10H, 0CH, 40H, 80H, 7FH DB 00H, 00H, 04H, 08H, 30H, 60H, 00H, 00H END總設(shè)計(jì)電路圖：36