Hi! We are students working on implementing FFT on FPGA, virtex 4. We used Chipscope to test our code and capture signals off the hardware while its running. when we tried to test an 8 bit adder using chipscope, in the ILA core, we constantly got an error which said 'waiting for core to be armed'. We understand that this indicates that appropriate trigger signal has not been provided. We've tried everything possible but we're not able to figure out how to provided an appropriate trigger.
some of the things we tried:
1) specified the two 8 bit inputs as trigger
2) specified the clock as trigger.
Both the above had failed. So please help us by telling how to proceed.