thnks for reply,, i m generating 120kHz from Timer-2(89c52) and giving it to CLOCK input of ICL7135. AT the same time i m reading A/D count from the same CLOCK pin using timer-0(AT89c52). i m using BUSY pin of ICL7135 as i/p to INT0(89c52).i m also using POLARITY pin connected to P3.5

Now i have to get the digital count by counting the clock pulses at timer-0 which are coming from CLOCK of ICL7135. i m using BUSY pin as interupt to 89c52,
So can u help me by providing assembly code for reading this digital count,, as explained above