Hi, with FPGEN (Alliance 4): I put a DP_PDFF in a figure (dff_fpgen.c). I run fpgen, which generates dff_fpgen.vst. I create a pattern file (dff_genpat.pat) from a genpat file (dff_genpat.c). I do a simulation with asimut and errors are generated: " Error 102: instance and model of 'pdff_16x16x0l_cl' mismatch " I include this little example (file dff.tgz attached). Just execute: > make dff_pat If you know what's the problem, or if you don't receive the error message, please email me (rafabe@telesat.com.co). Thanks and good luck Rafael Becerra