[ixp1200] How to debug microACE code on hardware?

Hi, I want to add some code into the l3forwarder microace example. Anyone can tell me how can I debug the code on ixp1200 board using the Workbench? I can debug a simple microengine C program on the hardware now. But the microACE code has corelation with the StrongARM code. Thanks! Yong Liu