Modelsim 10.5 !!install!! Download Link

Microchip provided a "Microchip Edition" (ME) of ModelSim 10.5c for their FPGA users.

It offers robust support for Verilog, VHDL, and mixed-language simulation. GUI Familiarity: modelsim 10.5 download

. It offers faster simulation speeds and better systemverilog support. Microchip provided a "Microchip Edition" (ME) of ModelSim 10

Sometimes older, stable versions are listed in the "Standard Edition" archives (though 18.1 is newer, it may contain 10.5 components). Key Tips for Installation License Requirement: modelsim 10.5 download

In the "Download Center," click on "Individual Files" and then "Archive."