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Simulation enables a much higher quality FPGA design before entering the lab allowing time spent during lab debug much more productive and focused. With simulation the debug loop is much faster and there is complete visibility into the signals in the design.
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It can take 8 hours to do a place and route just instrument additional signals or make a small bug fix. Testing in the lab has limited visibility of the signals in design. This means weeks or even months of inefficient debugging time in the lab. Many FPGA designers go to the lab before adequately vetting their design.
#Modelsim 10 comman simulator#
Modelsim HDL simulator provides FPGA customers with and easy cost-effective way to speed up FPGA development, lab bring up and test. Defining larger widths are useful for high density monitors where a single pixel wide line is too narrow to see clearly.Ībout Mentor Graphics ModelSim. dvt109197 - Added PrefWave(LineWidth) preference define the width of waveform lines. dvt109476 - The vcom compiler "-just" and "-skip" options now allow the specification 'x', which means VHDL 2008 "context" declarations. dvt108324 - The compiler could crash when encountering a composite assignment, where the left-hand side contains a variable whose type is an interface type. dvt107650 - Reference to a package constant defined within a package instance that is itself defined within a simple package could cause the compiler to produce an internal error. Enabled class instance window in view mode dvt109672 - The vsim GUI crashes when displaying certain in VHDL source code. dvt109387 - The Coverage HTML Report dialog box sometimes fails with an "# ** Error: (vsim-4003) Invalid option '-code '." message. dvt109082 - Repaired GUI crash when associative arrays are present in automatic functions. Now it will report a warning 5 times, 5 seconds apart, before giving up and returning an error status. dvt106889 - "vmap" fails silently when there is a leftover lock file. dvt108473 - From the Message Viewer, when opening the source file referenced in a message, if the file cannot be found, a dialog box will pop up, requesting the user to select the location of the file. dvt84893 - The simulation timescale is incorrect in some circumstances when running in -batch mode. This legacy switch forces incremental mode (pre-6.0 behavior) which is sub-optimal, and it is no longer maintained. Customer scripts using this switch will have to be changed. In 10.8 or a subsequent release, the -novopt switch will not be accepted by the tool and cause tool to exit with error message. The -novopt switch will be accepted in 10.7 with a deprecation suppressible error message. (source, results) The -novopt command line switch will be deprecated in the next major release 10.7 following normal deprecation process:
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The transcript output in -batch mode now matches the output when using -c or -i modes in this regard. dvt94468 - (results) When using vsim -batch mode, the transcript (stdout) output could contain NUL and CR characters that are otherwise filtered out when using other vsim modes. dvt110375 - (results) In some cases simulation result differ between optimized and unoptimized cells with optimize cells selecting the wrong path delay when negative timing checks are present. src/iter1b.sv(11): Illegal use of solve/before constraint in conditional/implication constraint context. When the condition expression of IfElse constraint is NOT constant, a new runtime error (vsim-16056) will be thrown, i.e.Įrror: (vsim-16056). A compile error (vlog-2919) will be thrown if solve/before constraint is under an IfElse constraint. vlog/vopt -pedanticerrors or -svext=-ifslvbefr will revert back to the legacy behavior. By default, this extension is on and no compile-time check is triggered. dvt110034 - (source, results) Added a SV extension vlog/vopt -svext=ifslvbefr to allow solve/before constraint within an IfElse constraint with constant condition. Any differences will be flagged by the compiler with an error.
#Modelsim 10 comman code#
This may cause SV HDL code to be compiled differently than with previous versions. (source) An issue with incorrect precedence in the & and "matches" operations in SV has been fixed. Improved Verilog/VHDL performance and optimizations Mentor, a Siemens business, has unveiled ModelSim 10.6e, is unified debug and simulation environment gives today's FPGA designers advanced capabilities in a productive work environment. Mentor Graphics ModelSim SE-64 10.6e | 814.2 mb