Mentor: ModelSim® limits the number of files to 30 when outputting files with $fopen in simulation. Please suggest me a workaround.

simulation

Category: Simulation
Tools: ModelSim®
device:-

<Message>
Warning: (vsim-3533) [FOFIW] - No mcd channels available. Failed to open file "./<filename> for writing.

Due to Verilog/language limitations, there is no workaround in the tool.

As mentioned in the Knowledge below, if you don't want to use the mcf function, try using file descriptor with type specified.
https://support.sw.siemens.com/en-US/product/852852093/knowledge-base/MG60108

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