How do I find out the cause and resolution to ModelSim vsim errors? - How do I find out the cause and resolution to ModelSim vsim errors? Description ModelSim® error and warning messages are tagged with a vsim code. To find out the cause and resolution for a vsim error or warning, use the verror command. For example, ModelSim may display the following error message: # ** Error: (vsim-19) Failed to access library 'work' at "work". To find the cause of and resolution to this error, use the following verror command at the ModelSim command prompt: verror 19 ; ModelSim returns the following message: # common Message # 19: # The specified library could not be accessed at the specified location. # Verify that the directory exists, that it contains the ModelSim library, # and that you have the correct permissions for accessing it. # Also make sure that the _info file in the library has the correct # access permissions. # This message might be followed by another message that gives more information # about the problem. # # The vlib command creates ModelSim libraries. The vmap command maps # logical library names to physical library locations. Use the vmap # command without arguments to find out how all of your libraries are # mapped. # # One way this problem can occur is if the mapping for the library in # your modelsim.ini file contains an environment variable that is not set # in your environment. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Cyclone® II FPGAs'] ['novalue'] ['novalue'] ['novalue']