;八月桂花香唱歌程序。
;***************************************************************************
;* (程序轉載請著明出處 ，未聲明可適應本站騰龍/isp開發套件/倚天版開發套件      *
;*  E-mail:sxj1974@163.com (51c51 test web)  51測試網，自學單片機的網站            *
;* Create by :石學軍 www.51c51.com   www.8951.com 更多例程請登陸網站                 *
;***************************************************************************
ORG 0000H
LJMP START
ORG 000BH ;中斷入口

INC 20H ;中斷服務程序,中斷計數器加1
MOV TH0,#0D8H
MOV TL0,#0EFH ;12M晶振，形成10毫秒中斷
RETI 

START: 
MOV SP,#50H
MOV TH0,#0D8H
MOV TL0,#0EFH
MOV TMOD,#01H
MOV IE,#82H
MUSIC0:
NOP
MOV DPTR,#DAT ;表頭地址送DPTR
MOV 20H,#00H ;中斷計數器清0
MOV B,#00H ;表序號清0
MUSIC1:
NOP
CLR A
MOVC A,@A+DPTR ;查表取代碼
JZ END0 ;是00H,則結束
CJNE A,#0FFH,MUSIC5
LJMP MUSIC3
MUSIC5:
NOP
MOV R6,A
INC DPTR
MOV A,B
MOVC A,@A+DPTR ;取節拍代碼送R7
MOV R7,A
SETB TR0 ;啟動計數
MUSIC2: 
NOP
CPL P3.3
MOV A,R6
MOV R3,A
CPL A
MOV P1,A ;顯示(修改者加入的顯示)
CPL A
LCALL DEL
MOV A,R7
CJNE A,20H,MUSIC2 ;中斷計數器(20H)=R7否?
;不等,則繼續循環
MOV 20H,#00H ;等于,則取下一代碼
INC DPTR
LJMP MUSIC1
MUSIC3:
NOP
CLR TR0 ;休止100毫秒
MOV R2,#0DH
MUSIC4:
NOP
MOV R3,#0FFH
LCALL DEL
DJNZ R2,MUSIC4
INC DPTR
LJMP MUSIC1
END0:
NOP
MOV R2,#64H ;歌曲結束,延時1秒后繼續
MUSIC6:
MOV R3,#00H
LCALL DEL
DJNZ R2,MUSIC6
LJMP MUSIC0
DEL:
NOP
DEL3: 
MOV R4,#05H
DEL4: 
NOP
DJNZ R4,DEL4
NOP
DJNZ R3,DEL3
RET

DAT: 
DB 18H, 30H, 1CH, 10H
DB 20H, 40H, 1CH, 10H 
DB 18H, 10H, 20H, 10H
DB 1CH, 10H, 18H, 40H
DB 1CH, 20H, 20H, 20H
DB 1CH, 20H, 18H, 20H 
DB 20H, 80H, 0FFH,20H
DB 30H, 1CH, 10H, 18H
DB 20H, 15H, 20H, 1CH
DB 20H, 20H, 20H, 26H
DB 40H, 20H, 20H, 2BH
DB 20H, 26H, 20H, 20H 
DB 20H, 30H, 80H, 0FFH
DB 20H, 20H, 1CH, 10H
DB 18H, 10H, 20H, 20H
DB 26H, 20H, 2BH, 20H
DB 30H, 20H, 2BH, 40H
DB 20H, 20H, 1CH, 10H
DB 18H, 10H, 20H, 20H
DB 26H, 20H, 2BH, 20H
DB 30H, 20H, 2BH, 40H
DB 20H, 30H, 1CH, 10H
DB 18H, 20H, 15H, 20H
DB 1CH, 20H, 20H, 20H
DB 26H, 40H, 20H, 20H 
DB 2BH, 20H, 26H, 20H 
DB 20H, 20H, 30H, 80H
DB 20H, 30H, 1CH, 10H
DB 20H, 10H, 1CH, 10H
DB 20H, 20H, 26H, 20H
DB 2BH, 20H, 30H, 20H
DB 2BH, 40H, 20H, 15H
DB 1FH, 05H, 20H, 10H
DB 1CH, 10H, 20H, 20H
DB 26H, 20H, 2BH, 20H
DB 30H, 20H, 2BH, 40H
DB 20H, 30H, 1CH, 10H
DB 18H, 20H, 15H, 20H
DB 1CH, 20H, 20H, 20H
DB 26H, 40H, 20H, 20H
DB 2BH, 20H, 26H, 20H
DB 20H, 20H, 30H, 30H 
DB 20H, 30H, 1CH, 10H
DB 18H, 40H, 1CH, 20H
DB 20H, 20H, 26H, 40H
DB 13H, 60H, 18H, 20H
DB 15H, 40H, 13H, 40H
DB 18H, 80H, 00H
end