Hello, on a(ny) PIC32 I can't get ipl7 interrupts working reliably, i.e. using the register shadow set. Yes, I know there must be only one instance, and my le= vel 7 interrupt is not re-entrant (as far as I know there can't even be level7 = ints called when one is already being served). I'm not using and I don't want to use the standard library routines to mana= ge them, yet all the other <=3D6 levels work perfectly, just the 7 doesn't. Is= there anything special for level7 I'm missing, like a call to enable shadow set, = etc..? Interrupts get called but it looks like there's corruption going around. Bu= t, as I said, only one interrupt is ipl7 and it certainly isn't reentrant.. so= I would expect it to work. :( With kind regards, Mario --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .