Its architecture allows platform-independent compile with the outstanding performance of native compiled code. ModelSim's award-winning Single Kernel Simulator (SKS) technology enables transparent mixing of VHDL and Verilog in one design. In addition to supporting standard HDLs, ModelSim increases design quality and debug productivity. Simulation enables a higher quality FPGA design before entering the lab, allowing time spent in the lab to be more productive and focused. With simulation the debug loop is much faster and there is complete visibility into the signals in the 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. The ModelSim HDL simulator provides FPGA customers with an easy and cost-effective way to speed up FPGA development and testing.
ModelSim eases the process of finding design defects with an intelligently engineered debug environment. The best standards and platform support in the industry make it easy to adopt in the majority of process and tool flows. The combination of industry-leading, native SKS performance with the best integrated debug and analysis environment make ModelSim the simulator of choice for both ASIC and FPGA design. Mentor Graphics was the first to combine single kernel simulator (SKS) technology with a unified debug environment for Verilog, VHDL, and SystemC. This occurs if the signal bounds depend on functions calls. QSIM-65639 - The design.bin could have incorrect bounds on signals. Explicitly initializing the object will work around the issue. For this to happen the default value for all fields in the data structure must be 0 or NULL. QSIM-66278 - Large data structures that take over 2Gbytes of space would crash if default initialization is used. This behavior is incorrect, and now all errors are printed, though other compilation logging messages are suppressed. QSIM-65962 - During compilation with the -autoorder and -quiet switches, if semantic errors were encountered during the refresh phase, the errors would not be printed.
In cases where "C" was a parameterized class type and 'Intf" was a typedef name referenceing an interface class. ** Error: test.sv(7) Illegal reference to an interface type C::Intf in implements clause. For names like 'pkg::typename::get_type() where "typename" is a typedef name resolving to a class. ** Error: while parsing file test.sv(50): Failed to find the name 'get_type' in scope 'tpkg' QSIM-64132 - Vlog sometimes gave incorrect errors like: Release Notes For ModelSim 2020.4 - Date: Oct 13 2020 Mentor, a Siemens business, is pleased to announce the availability of ModelSim 2020.4, is unified debug and simulation environment gives today's FPGA designers advanced capabilities in a productive work environment.
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