sir we r using a control board with d7810hg 64 pin (it is an ADC supposedly).also we have a programmed otprom with a supporting eeprom which is 59c11 (8-pin dip).now this eeprom is very hard to find.some guys advised me to go for 93c46 (also 8-pin dip eeprom).both r 1Kb serial micro wire...