Modelsim error on altera_onchip_flash_block - Error: (vsim-3033): Instantiation of 'altera_onchip_flash_block' failed. The design unit was not found.

Looking into the error, can you check

$QSYS_SIMDIR/main.v

Whether this files exist in $QSYS_SIMDIR?

Thanks for answer.

You are right, the problem is with the paths.

I changed the lines as follows:

eval vlog $ USER_DEFINED_VERILOG_COMPILE_OPTIONS $ USER_DEFINED_COMPILE_OPTIONS "$ QSYS_SIMDIR /../../ main.v"

eval vlog $ USER_DEFINED_VERILOG_COMPILE_OPTIONS $ USER_DEFINED_COMPILE_OPTIONS "$ QSYS_SIMDIR /../../ AC_meas_tb.v"

Now all modules are compiled without errors after command:

source msim-setup.tcl,

ld,

but an error is thrown at the end:

# vsim -t ps -L work -L work_lib -L onchip_flash_0 -L altera_ver -L lpm_ver -L sgate_ver -L altera_mf_ver -L altera_lnsim_ver -L fiftyfivenm_ver AC_meas_tb

# Start time: 09:02:11 on Feb 27,2020

# ** Error: (vsim-3170) Could not find 'AC_meas_tb'.

# Searched libraries:

******

# Error loading design

# Error: Error loading design

# Pausing macro execution

# MACRO ./AC_meas_NIOS_run_msim_rtl_verilog.do PAUSED at line 24

I do not understand which "AC_meas_tb" the simulator does not find.

PS If I start RTL simalation from Qaurtus I get error "Error: (vsim-3033): Instantiation of 'altera_onchip_flash_block' failed".

PS If I start RTL simalation from Qaurtus I get error "Error: (vsim-3033): Instantiation of 'altera_onchip_flash_block' failed".

do not use this method, this method is not for platform designer usage.

Yes, some of the IP component use platform designer format. If use megawizard/megafunction it is still fine.

Anyway, I look into your .v files, it

AC_main_tb which is not AC_meas_tb, you may need to change it.

Thanks a lot KennyT_Intel!

You are a very attentive, but I am not at all! If it weren’t for you, I wouldn’t notice the difference between MAES and MAIN in "AC_xxxx_tb", because they are so similar among a huge number of letters!

You are welcome! remember to help me select best asnwer ya ;)

KennyT_Intel, I ask you to answer one more question:

If I modify a file in the project, then to restart the simulation with the new data, I first stop the simulation "quit-sim" and recompile with the commands "source msim_setup.tcl" and "LD", but modelsim gives a lot of errors on each external module used by top-level file MAIN.v:

# Loading work.main

# ** Error: (vsim-3033) ./../../../main.v(198): Instantiation of 'receiving_from_PC' failed. The design unit was not found.

# Time: 0 ps Iteration: 0 Instance: /AC_meas_tb/main_inst File: ./../../../main.v

etc.

If I quit from ModelSim and start it again, do all operations described above, simulation start again normal.

How restart simulation without reopen ModelSim?

before your source the source msim_setup.tcl. Try to use restart command.

Here is what I noticed.

1) When I start ModelSim from Quartus I get an error. Next, with the CD commands, I go to the msim_setup.tcl file, execute the source and ld commands. The simulation starts. Restarting the simulation fails with the above error.

2) When I start ModelSim from the Windows START menu, with the CD commands I go to the msim_setup.tcl file, I execute the source and ld commands, the simulation does not start, but ends with the same error as when restarting.

That is, the simulation only works when starting ModelSim from Quartus and then writing commands on its command line.

Why does the simulation not work when starting ModelSim from the START menu of Windows and how to restart the simulation all the same without reopening ModelSim?