I don't know about bootloaders, but there are status bits that are set on reset, and using them you can tell what kind of reset you've just experienced. In addition, I think some registers might have different values depending on POR or MCLR. Josh -- A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. -Douglas Adams rad0 wrote: > I think the data sheet tells you to take mclr to ground, to reset the pic, > true? > > if so, what is the difference between doing this and recycling the power? or > is a reset exactly the same as powering off then on? -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.