At 03:59 PM 1/22/03 -0600, you wrote: >you might find this interesting > >http://www.kronosrobotics.com/pj_logicprobe/logicprobe.htm > > >it's a build it yourself logic probe, that might be done with a pic, >(I don't even know what a logic probe is used for but...) Judging by the below program, it seems like a bit of overkill for this application. ;-) loop: if IOPORT(TestLead) = 1 then high OutputLED else low OutputLED endif goto loop Best regards, Spehro Pefhany --"it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads