Gondya,
If you sure to writing data in to cgram
with this code you can read it from Character Generator Ram
and write it in to DDRAM or Data Display Ram

CGRAM_READ:
SETB LCD_EN
SETB LCD_RS
MOV A,ADRES ;ADRES is between 0-7 ,CGRAM Pointer
MOV P1,A ;P1 is for lcd pinoutCLR LCD_EN
LCALL DELAY1 ;40 us delay
CLR LCD_RS
RET

To writing character to special point of lcd
you must set ddram address before it

For example:

MOV A,#80H
LCALL ADDRESS ;Set DDRAM address,beginning of first line
MOV ADRES,#0
LCALL CGRAM_READ ;This Code Writes char in address#0 of cgram
;on to the beginning of first line


ADDRESS:
SETB LCD_EN
CLR LCD_RW
CLR LCD_RS
MOV P1,A
LCALL DELAY2 ;1.5 ms delay
CLR LCD_EN
LCALL DELAY1
RET


Good Luck
Mehdi