請(qǐng)問(wèn)此程式有什么錯(cuò)？

ORG 00H
SJMP START
ORG 03H
MOV TL0,#0fcH
MOV TH0,#18H
START: MOV SP,#60H
MOV TL0,#0fcH
MOV TH0,#18H
MOV TMOd,#01h
MOV IE,#81h
MOV 20H,#00H
LOOP: MOV DPTR,#TAB
  CLR A
MOVC A,@A+DPTR
MOV B,A
loop1: MOV R5,A
  MOVC A,@A+DPTR
CJNE A,#00H,LOOP3
MOV 20H,#00H
MOV B,#20H
        CALL DELAY
SJMP LOOP
LOOP3: CJNE A,#0FFH,LOOP4
  MOV R3,#64H
DJNZ R3,$
LJMP LOOP1
LOOP4: MOV R6,A
  MOV R7,B
SETB TR0
LOOP5: CPL P1.4
  DJNZ R6,LOOP4
CJNE A,#20H,LOOP5
LOOP6: CLR TR0
MOV 20H,#00H
INC B
SJMP LOOP1
DELAY: MOV R4,#255
D1: DJNZ R4,$
DJNZ R3,D1
RET
TAB: DB 18H,20H,22H,29H,81H
  DB 45H,30H,20H,12H,0F0H
RET
END