Listas, Apologies, I've just had a better look at your code - telling you fibs I'm afraid :) I've just noticed that Pointer is a long, not a long * as I first thought - I read your code wrong, so please ignore. I can see that you'r using the first element of Channel2Bfr as a current index. D'oh ! Regards, Pete Restall -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist