> > I'm going to have to try that :) I was about to suggest that, but he beat me to it. Anyhoo, my understanding is that a lot of the scopes used similar tricks. A number of ADCs all started from the same pulse, through controlled prop delays, saving data to rams similarly interleaved. -- > Feel the power of the dark side! Atmel AVR -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist