【正文】 A,R3 RL A INC A28 MOVC A,@A+DPTR MOV 20H,A MOV TL0,A SETB TR0 。開唱SING1:LCALL DELAY 。每個音符唱多久 JB F0,FOR 。是否暫停， AJMP NEXT 。沒有暫停，繼續(xù)FOR: CLR TR0 。暫停，不唱 JB F0,$ 。等待播放 AJMP NEXT 。開始播放END0: CLR TR0 。不唱 MOV A,22H 。唱完處理 CJNE A,N,WW 。是不是全部歌曲都唱完 MOV 22H,01H 。全部唱完，則從第一首開始再唱 MOV R7,00H MOV OUT_NUM,06H 。數(shù)碼管顯視第一首歌曲編號 AJMP WWWWW: MOV A,R7 。沒有全部唱完，唱下一首,歌曲的入口信息調整 ADD A,4 MOV R7,A INC 22H CLR EA PUSH DPH PUSH DPL MOV A,22H MOV DPTR,OUT_TAB MOVC A,@A+DPTR MOV OUT_NUM,A 。數(shù)碼管顯視相應的歌曲編號 POP DPL POP DPHWWW: SETB EA AJMP START0 。開始下一首的演唱F_T0: MOV TH0,21H 。定時器 0 置初值29 MOV TL0,20H CPL OUT 。頻率產生 RETINEXT_SONG: PUSH ACC 。下一曲中斷程序處理，保護現(xiàn)場 PUSH DPH PUSH DPL CLR EA 。關中斷 MOV A,22H CJNE A,N,Q 。是最后一首嗎？ MOV R7,00H 。是最后一首，則 R7 指向第一首，演唱第一首 MOV 22H,01H AJMP BACK Q: INC 22H 。不是最后一首，唱下一首,R7 內容加 4，歌曲數(shù)加 1 MOV A,R7 ADD A,4 MOV R7,ABACK: MOV R4,00H 。數(shù)碼管顯視相應的歌曲編號 MOV A,22H MOV DPTR,OUT_TAB MOVC A,@A+DPTR MOV OUT_NUM,A。******************************************** MOV B,R0 。對下首要演唱的歌曲的幾分拍進行調整,同時對 R0 中的內容進行保護 MOV R4,00H MOV R0,30H MOV A,R7 ADD A,R0 MOV R0,A MOV DPH,@R0 INC R0 MOV DPL,@R0 INC R0 MOV A,R4 INC R4 MOVC A,@A+DPTR MOV 26H,A 。結果存入 26H 單30元中 DEC R4 MOV R0,B 。恢復 R0 中的內容。******************************************** POP DPL ?；謴同F(xiàn)場 POP DPH POP ACC SETB EA RETI 。中斷返回LAST_SONG: PUSH ACC 。上一曲中斷程序處理開始，保護現(xiàn)場 PUSH DPH PUSH DPL CLR EA 。關中斷 MOV A,22H 。曲目數(shù)送 A CJNE A,1, 。是否是第一首 MOV 22H,N 。是第一首歌曲 MOV B,4 。將 R7 指向最后一首歌曲 MOV A,N1 MUL AB MOV R7,A AJMP BACK2 。處理結束: DEC 22H MOV A,R7 。R7 減 4 SUBB A,4 MOV R7,ABACK2: MOV R4,00H MOV A,22H MOV DPTR,OUT_TAB MOVC A,@A+DPTR MOV OUT_NUM,A 。數(shù)碼管顯視相應歌曲的編號。******************************************** MOV B,R0 。對下首要演唱的歌曲的幾分拍進行調整,同時對 R0 中的內容進行保護 MOV R4,00H MOV R0,30H MOV A,R7 ADD A,R0 MOV R0,A MOV DPH,@R0 INC R0 MOV DPL,@R031 INC R0 MOV A,R4 INC R4 MOVC A,@A+DPTR MOV 26H,A 。結果存入 26H 單元中 DEC R4 MOV R0,B 。R0 中的內容恢復。******************************************** POP DPL 。恢復現(xiàn)場 POP DPH POP ACC SETB EA RETI 。中斷返回START_PAUSE:CPL F0 。開始/ 暫停中斷處理程序，將標置位取反 JB F0,RETURN 。為 1 返回 SETB TR0 。為 0 則播放RETURN: RETI 。中斷返回DELAY: MOV 27H,26H 。音符演奏時間控制D2: MOV 28H,125D3: MOV 29H,248 DJNZ 29H,$ DJNZ 28H,D3 DJNZ 27H,D2 DJNZ R2,DELAY RETOUT_TAB: DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FH,77H,7CH,39H,5EH,79H,71H,73H 。共陰數(shù)碼管顯視用。OUT_TAB: DB 0C0H,0F9H,0A4H,0B0H,99H,92H,82H,0F8H,80H,90H,88H,83H,0C6H,0A1H,86H,8EH,0FFH 。共陽TABLE: DW SONG1,TABLE1,SONG2,TABLE2,SONG3,TABLE3TABLE1:DW 64580,64684,64777,64820,64898,64968,65030 DW 63628,63835,64021,64103,64260,64400,64524SONG1: DB 04H 。1=C 2/4 軍港之夜DB 32H,54H,52H,32H,54H,52H,32H,12H,12H,32H,32H,54H,52H,32H,52H,52H,32H,32H,21H,31H,24H,0E2H,0D1H,0E1H,0D2H,0C2H,14H,14HDB 0C2H,32H,32H,12H,21H,31H,24H,32H,34H,0D2H,0C2H,14H,14H,32H,52H,52H,32H,52H,54H,32H,34H,31H,21H,12H,24H,24H32DB 34H,0E2H,0C2H,0D1H,0E1H,0D4H,12H,0E2H,32H,32H,0E2H,0D1H,0E1H,0D4H,0D2H,0E2H,32H,32H,0E2H,0E2H,0D1H,0E1H,0D4HDB 22H,0D1H,11H,0E2H,0D2H,0C4H,0C4H,32H,52H,52H,32H,62H,5H,61H,54H,31H,52H,31H,12H,31H,31H,32H,54H,52H,32H,52H,52H,32HDB 32H,21H,31H,24H,0E2H,0D1H,0E1H,0D2H,0C2H,34H,34H,32H,52H,52,32H,62H,51H,61H,54H,31H,52H,31H,12H,32H,12H,32H,32H,54H,52HDB 32H,52H,52H,31H,31H,32H,21H,31H,24H,0E2H,0D1H,0E1H,0D2H,0C2H,14H,14HDB 32H,52H,52H,32H,32H,21H,31H,24H,0E2H,0D1H,0E1H,0D2H,0C2H,14H,14HDB 0C2H,32H,32H,12H,21H,31H,24H,32H,34H,0D2H,0C2H,14H,14H,32H,52H,52H,32H,52H,54H,32H,34H,31H,21H,12H,24H,24HDB 34H,0E2H,0C2H,0D1H,0E1H,0D4H,12H,0E2H,32H,32H,0E2H,0D1H,0E1H,0D4H,0D2H,0E2H,32H,32H,0E2H,0E2H,0D1H,0E1H,0D4HDB 22H,0D1H,11H,0E2H,0D2H,0C4H,0C4H,32H,52H,52H,32H,62H,5H,61H,54H,31H,52H,31H,12H,31H,31H,32H,54H,52H,32H,52H,52H,32HDB 32H,21H,31H,24H,0E2H,0D1H,0E1H,0D2H,0C2H,34H,34H,32H,52H,52,32H,62H,51H,61H,54H,31H,52H,31H,12H,32H,12H,32H,32H,54H,52HDB 32H,52H,52H,31H,31H,32H,21H,31H,24H,0E2H,0D1H,0E1H,0D2H,0C2H,14H,14HDB 32H,52H,52H,32H,32H,21H,31H,24H,74H,0D2H,0C2H,14H,14H,14H,14HDB 00HTABLE2:DW 63835,64021,64103,64260,64400,64524,64580,64684,64777 DW 64820,64898,64968,65030,65058,65110,65157,65178SONG2: DB 02H 。1=C 4/4 死了都要愛DB 04H,94HDB 0E8H,0E4H,0E4H,0E8H,0E4H,0F4H,0D4H,0C4H,0B4H,84H,84H,92H,92H,94H,92H,02H3