hi! i am using AT89S8252 microcontroller in one of my projects, where i have to store Passwords from user in EEPROM. I am using Keil Simulation software. I dont know how to access in-built EEPROM in AT89S8252 in assembly language. when i am using WCON, keil simulator gives error UNDEFINED SYMBOL. so plz help me out with example programs using EEPROM. Thank U.