Questa Simulation Not Showing All Needed Variables

same query

Miceli,

Is possible to provide sample design and steps that replicate the issue? this could be a bug for Questa since it is recent adopt to Quartus.

Miceli,

May I know if there is any update from my previous query?

It ended up being a setting that was automatically turned on for Questa but not for Modelsim. It took me awhile to find because I had never had to change the setting in the past. When simulation is started, there's and optimization setting that must be switched to show full visibility to all variables.

Miceli,

Noted. Seem the issue was resolved let me know if there is any other query at your end otherwise Ill put this to close pending.

The issue here is "optimization" which needs to be turned off for logic debug, and probably always in an FPGA design. For verilog, right click on a source, choose "compile properties" and check "use vopt flow" and maybe you want to select an optimization level under coverage. I believe that these settings are project wide. If you need to look into an Altera IP block, you may have to put a comile option into the msim_setup.tcl file. Haven't tied that.

Note: I solved this about a year ago and may be a bit fuzzy on the path.

Thanks, that gives me a direction to go. I'm using VHDL.

In Questa, I went to "Compile Options" and "Use vopt flow" was already selected. I tried unselecting it (and recompiling and reloading my testbench) with no change. I also tried selecting "Disable optimizations by using -O0" with the same result.

Look in the manuals for the vhdl compile command line. In verilog you want the -vopt flag.

I can't find the "Fine Manual" to read :).

The Help/Questa PDF Bookcase is all dead links. Nothing online seems to have current versions (21.1). vcom does have a -vopt flag, but it doesn't seem to expose variables.

It should be in your installation directory

C:\intelFPGA_pro\21.3\questa_fe\docs\pdfdocs\

If you don't have the Intel version, you can download it and get the PDFs