AVR-Chat

At 05:51 PM 1/2/2004 -0800, Larry Barello wrote:

>Well, given that the vector table is correct and you are on the simulator,
>there must be some other problem.  I know you have run across a bunch of
>simulator issues, still, I would consider s/w first. 

Yeah.. It's kind of disheartening, when you're not sure where the problem is like this. It's easy to feel like nothing's going to work, and it's hard to have a lot of enthusiasm. 

> perhaps some other
>handler is fiddling with GICR or MCUCR and messing with the various bits.

I would say so, but when the ISR is firing, I'm BP'd there, and the ISR shows disabled.  I know the flag will be cleared by that point, but the enables should show their true state at that point.

>Still, consider using a mega16 in an STK500 and bring out the appropriate
>port bits to your mega8 header (cruft something up if you are using the MLF
>package) then you can develop with the JTAG.  As far as I can tell the M16
>is a straight upgrade from the m8 - at least for the projects I have worked
>on.  Just make sure you get the right vector table :)  After you get things
>working, then recompile for the m8 and it should work.  Keep the m16 lash-up
>around for development work.

Hmm.. That might be an option.