hi all, im unable to generate INT0 interrupt in simulator after doing the "PIN CONNECT" specified in help (Tools --> Pin connect) and the input .dat file has 55 85 99 rpt 111|EOS data,i could not see the INT0 ISR being served while Timer_ISR is being served as xpected how could generate the INT0 interrupt in simulator mode and cross check it..? Thanks, Ganesh