Hello, I'm using the CCS C compiler and am having trouble getting a #int_ad interrupt to fire. I am using the following code: void main( ) { puts( "Hello!"); enable_interrupts(GLOBAL); enable_interrupts(INT_ADC); enable_interrupts(ADC_DONE); set_adc_channel(0); while (1); } #INT_AD void Analog_Handler() { puts ( " In Analog Handler! " ); } Note: I am enabling serial communication and do recieve "Hello!". Does anyone have any experience with CCS and interrupts? Donovan -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics