Hello all, I've been having trouble using the workbench to run the ingress interface aces (of the SDK) while debugging. I can successfully run the various tutorials and the L3 forwarding ace without debugging them by using the ixstart scripts with mode = 0. When I use mode = 1 and use the workbench to debug, the microaces run as if no packets were being received. Inspection of the code (and some added debugging routines) show that when the workbench is not running, incoming data on ports 0-3 are reflected in bits 0-3 of the rcv_rdy_lo CSR. However, if I use the workbench to upload the code and run it, bits 8-11 of rcv_rdy_lo reflect the activity on ports 0-3. This of course prevents packets from being received [the code looks at ((rcv_rdy_lo >> port_num) & 1) for activity]. I'm pretty sure all the variables/symbols are being patched correctly. Does anybody have any ideas what could cause this discrepancy? I'm using an ENP-2505 board with 4 100Mb ports. Thanks for any help. -Michael Burns UCLA LASR