Quoting Micro Eng : > Its been a while since I've had to code into page 1. If you have an ISR > being triggered by TMR0, such that it is always going into it, what happens > when you enter it from page1, make calls from the ISR into page0 then return > back to page1. > > Does the stack contain the fact that you started in page1, so will it return > ok back there or do I (should I) disable interupts when I am running stuff > in page1 > > How deep is the stack for calls/returns? This is on an 877 device Unless there is more than one stack (which I don't think there is), according to the f877 datasheet, it has an "eight level deep hardware stack". That's all I can answer :-) > > _________________________________________________________________ > The new MSN 8: advanced junk mail protection and 2 months FREE* > http://join.msn.com/?page=features/junkmail > > -- > http://www.piclist.com hint: The PICList is archived three different > ways. See http://www.piclist.com/#archives for details. > ---------------------------------------- This mail sent through www.mywaterloo.ca -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.