Help. Các Pro vào xem cái mạch hiển thị LCd 16x2+ Code có gì sai ko giúp m với.

[dangbadat_9x]

Code asm đây.
;P1=data pin
;P2.0 -> RS pin
;P2.1 -> R/W pin
;P2.2 -> E pin
ORG 0000H
;RS EQU P2.0
;RW EQU P2.1
;E EQU P2.2

MOV A,#38H ;init. LCD 2 do`ng, ma tra^.n 5x7
ACALL CSTROBE
MOV A,#0EH ;LCD on, cursor on
ACALL CSTROBE
MOV A,#01H ;clear LCD
ACALL CSTROBE
MOV A,#06H ;cursor di.ch pha?i
ACALL CSTROBE
MOV A,#80H ;chuye^?n cursor dde^'n line 1, pos. 6
ACALL CSTROBE
MOV DPTR,#MYDATA ;Dua con tro du lieu toi bang
DONG1: CLR A
MOVC A,@A+DPTR
JZ THOAT ;Neu A=0 thi thi thoat
ACALL DSTROBE
INC DPTR
SJMP DONG1

THOAT: MOV A,#18H
ACALL CSTROBE
ACALL DELAY100MS
SJMP THOAT
HERE: SJMP HERE
CSTROBE: ;command strobe
ACALL READY ;is LCD ready?
MOV P1,A ;xua^'t ma~ le^.nh
CLR P2.0 ;RS=0: le^.nh
CLR P2.1 ;R/W=0 -> ghi ra LCD
SETB P2.2 ;E=1 -> ta.o ca.nh xuo^'ng
CLR P2.2 ;E=0 ,cho^'t
RET
DSTROBE: ;data strobe
ACALL READY ;is LCD ready?
MOV P1,A ;xua^'t du+~ lie^.u
SETB P2.0 ;RS=1 for data
CLR P2.1 ;R/W=0 to write to LCD
SETB P2.2 ;E=1 -> ta.o ca.nh xuo^'ng
CLR P2.2 ;E=0, cho^'t
RET
; kie^?m tra co+` BF
READY: SETB P1.7 ;P1.7: input
CLR P2.0 ;RS=0: thanh ghi le^.nh
SETB P2.1 ;R/W=1: ddo.c
BACK: CLR P2.2 ;E=0 -> ta.o ca.nh le^n
SETB P2.2 ;E=1
JB P1.7,BACK ;cho+` busy flag=0
RET
DELAY100ms: MOV R2,#100
DL5: MOV R1,#250
DL4: NOP
NOP
DJNZ R1,DL4
DJNZ R2,DL5
RET

ORG 250H
MYDATA:
DB "BABY I LOVE YOU",0

END