Driving LCD 4*20 with 89C55

[Hesam Kamalan]

hi all,
i wrote a program for driving 4*20 LCD. after executing of program, i can see line1 and line2 on LCD display, but i can not see line2, line4. please guide me how can i display all four lines.

 

[Hesam Kamalan]

;My Project
;**********************************************

LCD_OUT EQU P2
RS EQU P1.0
RW EQU P0.0
E EQU P1.1
FINE EQU 40
;**********************************************

ORG 0H
MOV FINE,#20
SJMP BODY

ORG 30H
BODY:
LCALL INIT
LOOP: MOV A,#80H ; 1'st Line Display
LCALL COMMAND

MOV DPTR,#TABLE1
MOV R0,FINE
AGAIN: CLR A
MOVC A,@A+DPTR
LCALL ASCII
INC DPTR
DJNZ R0,AGAIN

MOV A,#0C0H ; 2'ed Line Display
LCALL COMMAND

MOV DPTR,#TABLE2
MOV R0,FINE
AGAIN1: CLR A
MOVC A,@A+DPTR
LCALL ASCII
INC DPTR
DJNZ R0,AGAIN1

MOV A,#94H ; 3'rd Line Display
LCALL COMMAND
MOV DPTR,#TABLE3
MOV R0,FINE
AGAIN2: CLR A
MOVC A,@A+DPTR
LCALL ASCII
INC DPTR
DJNZ R0,AGAIN2

MOV A,#0D4H ; 4'th Line Display
LCALL COMMAND

MOV DPTR,#TABLE4
MOV R0,FINE
AGAIN3: CLR A
MOVC A,@A+DPTR
LCALL ASCII
INC DPTR
DJNZ R0,AGAIN3
SJMP LOOP
;**********************************************
INIT:
MOV A,#01H ; Clear Display
LCALL COMMAND

MOV A,#02H ; Return Home
LCALL COMMAND

MOV A,#06H ; Move Direction and Specifies shift of Display, Increment
LCALL COMMAND

MOV A,#0CH ; Display on / Curser Off, Blinking Off
LCALL COMMAND

MOV A,#1CH ; Cursor or Display Shift, 8 bit, Two line
LCALL COMMAND

MOV A,#30H ;Function Set/2 Lines and 5*7 Matrix
LCALL COMMAND

RET
;***************
COMMAND: MOV LCD_OUT,A
CLR RS
CLR RW
SETB E
NOP
CLR E
LCALL DELAY
RET

DELAY: MOV R7,#250
HERE: MOV R6,#255
DJNZ R6,$
DJNZ R7,HERE
RET

ASCII: MOV LCD_OUT,A
SETB RS
CLR RW
SETB E
NOP
CLR E
LCALL DELAY
RET


;|||||||||||||||||||||||||||||||||||||||

TABLE1: DB " *** Line 1 ****---" ;80
TABLE2: DB " *** Line 2 ****---" ;C0
TABLE3: DB " *** Line 3 ****---" ;94
TABLE4: DB " *** Line 4 ****---" ;D4

END

 

[Hesam Kamalan]

THX,
i found it. problem is on : "MOV A,#30H ;Function Set/2 Lines and 5*7 Matrix" line that i change it to "MOV A,#30H ;".