if i want to write in address 0fff1h the data 052h
the program should be

======================
mov dptr,#0fff1h
mov dyta,#052h
lcall eeprom_write
=======================

is my code correct?
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because in your code you use "ADRES" but you never call or use the "ADRES"
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your code >>>>>

EEPROM_WRITE:
LCALL I2C_START
LCALL I2C_WRITE1
LCALL I2C_STOP
RET

EEPROM_READ:
LCALL I2C_START
LCALL EEPROM_WRITE_ADDR
MOV A,DPH
LCALL WRITE
MOV A,DPL
LCALL WRITE
LCALL I2C_START
LCALL EEPROM_READ_ADDR
LCALL I2C_READ
LCALL I2C_STOP1
CLR SCL
LCALL DELAY
SETB SDA
SETB SCL
LCALL DELAY
CLR SCL
LCALL DELAY
RET

Therefore you must change [adres to dptr] in eeprom_write and eeprom_read routines >>>your code for read and write routine NEVERRRRRR use the "ADRES" or the code that you send is not completed yet.or "ADRES" is DPTR ???

i'm using AT89S8252 microcontroller and asm51 program for dos
in this software i must define all the address and register that i used,


thank u
wassalam wr wb