Honored Contributor
Honored ContributorHi Marcos,
As you start to use various vendor tools, you'll find they all have shortcomings. The best way to track down annoying errors is often to try (at least) two tools. I typically start with Modelsim for HDL development, and then switch to synthesis once I have a testbench working. Quartus sometimes catches errors that Modelsim misses, eg., signals in sensitivity lists is one that I sometimes see. That being said, Modelsim is not fault-free. This week I had QuestaSim crashing repeatedly with a Xilinx BRAM/FIFO model and the solution was to add "-t ps" to the command-line. This argument is often needed for PLLs, but I hadn't bumped into it for RAM, and was not expecting the tool to crash with a floating-point error. Bottom-line, the tools have bugs, and you figure out how to deal with them. As for coding, after you've made the some coding error a few times, you recognize the solution to the error message (whether that message is actually useful or not!). Cheers, Dave
