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16 years ago --- Quote Start --- Hi, I am using Quartus II for Cyclone II device. I have USB blaster for JTAG connection. I am trying to use signal tap II analyzer. When I try to recompile the file, after setting the instance and trigger conditions it is giving the following error messages " Error: Node instance "instance_1" instantiated with unknown parameter "SLD_ATTRIBUTE_MEM_MODE" Error: Can't elaborate inferred hierarchy "sld_signaltap:instance_1" Error: Quartus II Analysis & Synthesis was unsuccessful. 2 errors, 3 warnings Error: Peak virtual memory: 175 megabytes Error: Processing ended: Tue Apr 28 16:55:03 2009 Error: Elapsed time: 00:00:06 Error: Total CPU time (on all processors): 00:00:04 Error: Quartus II Full Compilation was unsuccessful. 4 errors, 3 warnings " I am pretty new to FPGA design. Pleae help me out with this issue. --- Quote End --- Hi, which Quartus Version did you use and how did you setup the signaltap file ? Kind regards GPK