Example using a custom OPB slave core with and interrupt

Hello,

I have been exploring the microblaze for about 2 weeks now and have
gotten to the point where I have created a simple OPB slave device
that consists of 4 32-bit registers that contain hard coded values and
a pushbutton input that generates an interrupt. There is only one
single interrupt so I have connected it directly to the Mblaze without
the use of an OPB Intc at this point.

The peripherial is designe around the opb_core_ssp1 example that is
included with the EDK. I can read the registers fine. My problem lies
with the interrupt. When I first set out I addes the int_handler
parameter to the MSS file for my core, but of course I had no driver
and was using the generic. I used the IPIF sw driver and created the
MDD and some sort of a TCL file. I wrote the interrupt handler to
change the value being sent out the UART.

When I press my pushbutton to generate the interrupt the execution
stops. I am not sure if the processor is getting lost in the interrupt
vector table or if the interrupt is locked on so that I am never able
to get out of the ISR........

I am stumped and looking desparately for some help. If anyone has done
something similar and would be willing to share their knowledge I
would appreciate it greatly.

Thanks,
Jeremy