Problem Solved

Hi All, 

I no longer need help on this problem because it has been solved.  
For some reason, both ports 0 and 1 are activated by Motorola's 
boot ROM.  Half of the IRQs were for service of port 1.  My test 
was a one-shot so I never saw any output.  Apparently it was all 
going to port 1.  

Paul