> Neat idea. Thanks. PICs can be put to all sorts of uses to test other PICs. A long time ago I made a logic analyser with an F84. Although it was only 4MHz, what I did was use a 50MHz crystal driving fast cache RAM and have the F84 merely supervise and do the upload to a PC. Got me out of a lot of hardware scrapes and solved more than a few headscratchers. Since then I've made the odd tool and they all give a valuable insight as to what's going on -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist