AVR-Chat

OK.  I am simulating in AVR Studio 4.12, and I have a problem.  My 
code depends on external asynchronus interrupts to work.  how do I 
simulate these in the AVR Studio environment, so I can test the code?

Specifically, I have 4 to 8 Hall effect sensors interrupting on input 
pins on port B, and I need to be able to see if the code does what it 
should when each one interrupts (and sometimes, when multiple, 
sequential interrupts have occurred)   How do I simulate external 
interrupts in AVR STudio (I am coing in assembly, if it matters to anyone).

tom