跪求大神帮看一下程序！

ORG 0000H
LJMP 0030H
ORG 000BH
LJMP MAIN
ORG 0030H
MOV TMOD,#11H
MOV TH0,#3CH
MOV TL0,#0B0H
MOV TH1,#0F8H
MOV TL1,#85H
MOV 30H,TH1
MOV 31H,TL1
MOV R1,#TAB
MOV IE,#82H
MOV R2,#14H
MOV R7,#07H
SETB TR0
SETB TR1
L0:
CPL P0.3
L3:JBC TF1,L2
SJMP L3
L2:MOV TH1,30H
MOV TL1,31H
SJMP L0
MAIN: MOV TH0,#3CH
MOV TL0,#0B0H
DJNZ R2,L1
MOV R2,#14H
MOV TH1,@R1
INC R1
MOV 30H,TH1
MOV TL1,@R1
INC R1
MOV 31H,TL1
DJNZ R7,L1
MOV R7,#07H
MOV R1,#TAB
L1: NOP
RETI
TAB:DB 0F9H,5AH,0FAH,13H,0FAH,68H,0FBH,04H,0FBH,90H,0FCH,0CH,0F8H,85H
END
我想做一个蜂鸣器一秒发出一个音调，1234567.结果就第一秒好使，然后就比比比比比比比个不停。