Primetime is just the timing checker.. where the syntax for sdc files originated I think. We found that Synplify Pro is not quite as good as the vendor tools (

Primetime is just the timing checker.. where the syntax for sdc files originated I think. We found that Synplify Pro is not quite as good as the vendor tools (xst/quartus) for FPGA synthesis, but I've not compared them recently. Actually there used to be a version of DC for FPGAs, but it was not good at all. I think it was not as prepared to duplicate logic or flops as compared with the FPGA specific tools.