Now we use JAZZ sbc18 lib, and if you use version5, it works well. if we use version6, it gives the following message. "unknown parameter name used to initialize the parameter" We wonder is the problem about the MMSIM. WE install MMSIM6.2 The way we configure the MMSIM6.2 in .cshrc is in following " setenv MMSIMHOME /cad/cds/MMSIM set path = {$path $MMSIMHOME/tools/bin $MMSIMHOME/tools/dfII/bin} " Is this right? THe cadence we used is IC5.10.41.500.3.31, and when we login cadence,it shows "Loading mmsimenv.cxt". Is that meaning mmsim has been sucessfully loaded into cadence ? Now we still can't use sbc18 lib version6 in spectre. Do anyone know how to solve this problem ? Best Wishes