Check out Circuit Cellar INK No 89 Francis Deck designed and built one that runs on a PC and can sample at over 20 MHZ. This seemed like a good project. -----Original Message----- From: Leo [mailto:cacciavite@BIGFOOT.COM] Sent: Wednesday, August 25, 1999 2:33 AM To: PICLIST@MITVMA.MIT.EDU Subject: PC logic analizer Hi PICer friends, To analize the real reaction / interaction of PWM, interrupt, counter and so on, is not possible to use the MPLAB environment. I'm, thinking that the today PC at 400 Mhz and over, with a bidirectional parallel printer port should be a nice platform to build a simple and most economic logic analazer. Anyone have been made some experience about this... Ciao Leo