AVR-Chat

Well, nice theory, but it didn't pan out. I replaced all the reti's 
in the vector table with
rjmp DEBUG statements.  I created an IRQ handler named DEBUG that simply 
alters the value of r28 from oxff to oxoo back and forth.  Placed a 
watch on r28, and ran the code.   Still oscillates back and forth 
between "sleep" and "rjmp MAIN", but never enters the DEBUG handler, so 
far as I can tell (using the "auto-Step" feature, which steps once, and 
breaks, then steps again, so my watch should be being updated if the 
value of r28 is changing, which it does not seem to be).
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I am becoming most discouraged with this problem.

tom
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