How to simulate these example CORDIC code?

What is the 'setup problem'? I'd suggest solving that first.

I'd use Modelsim

Modelsim's GUI interface has a function that figures out the correct ordering of the files in the project. Right click on one of the source files and then under 'Compile' look for something that says about auto-generating the compile order (I forget what the exact verbage is, but it's there).

KJ

Thank you for your reply. The following is from the add_files.tcl in the work_ps directory. I guess these files to form work library.

add_input_file -format {VHDL} -work Cordic {D:/DEMO/demo_hdl_designer/ Cordic/hdl/shiftn_synthesis.vhd} add_input_file -format {VHDL} -work Cordic {D:/DEMO/demo_hdl_designer/ Cordic/hdl/addsub_synthesis.vhd} add_input_file -format {VHDL} -work Cordic {D:/DEMO/demo_hdl_designer/ Cordic/hdl/atan32_Arch1.vhd} add_input_file -format {VHDL} -work Cordic {D:/DEMO/demo_hdl_designer/ Cordic/hdl/fsm_synthesis.vhd} add_input_file -format {VHDL} -work Cordic {D:/DEMO/demo_hdl_designer/ Cordic/hdl/cordic_pkg_pkg.vhd} add_input_file -format {VHDL} -work Cordic {D:/DEMO/demo_hdl_designer/ Cordic/hdl/cordic_synthesis.vhd}

Then, I form cordic_pkg to Cordic library. But the compiling error is

That is the compiler looks for addsub in the Cordic lib, not work lib. What's wrong? What is the function and differences of the directory files. I cannot what are for simulation, what are for synthesis. Thanks again.

BTW, part of the contents in the cordic_synthesis.vhl is as the below. Is it useful to understand the configuration?

-- Optional embedded configurations -- pragma synthesis_off FOR ADD1 : addsub USE ENTITY cordic.addsub; FOR ADD2 : addsub USE ENTITY cordic.addsub; FOR ADD3 : addsub USE ENTITY cordic.addsub; FOR ALL : atan32 USE ENTITY cordic.atan32; FOR ALL : fsm USE ENTITY cordic.fsm; FOR ALL : shiftn USE ENTITY cordic.shiftn; -- pragma synthesis_on

Thank you very much.

Another question, how to run the "compile.scr "?

I expect that you have to find modelsim.ini and fix up the source paths to match where they are on your machine.

Note that learning cordic theory has nothing to do with learning vhdl or modelsim. I would suggest starting with simpler examples or tutorials for each topic.

And I would recommend not spending any time learning hdl designer. Just use an editor and modelsim directly.

-- Mike Treseler

Send me an email and I will create a standalone Modelsim version for you. I wrote this code some time ago using HDL Designer and Modelsim.

Regards, Hans

.. snip

Use this procedure:

vlib Cordic vmap work Cordic vcom -work Cordic -just p ..\hdl\*.vhd vcom -work Cordic -just b ..\hdl\*.vhd vcom -work Cordic -just e ..\hdl\*.vhd vcom -work Cordic -just a ..\hdl\*.vhd vsim -c -do tb.scr

And you should get something like:

# Angle=60101B Sin=3FD815 Expected=3FD816 Cos=0476E0 Expected=0476E3 PASS # Angle=612E10 Sin=3FE98D Expected=3FE98B Cos=035976 Expected=035978 PASS # Angle=624C04 Sin=3FF603 Expected=3FF604 Cos=023BCB Expected=023BCB PASS # Angle=6369F8 Sin=3FFD7E Expected=3FFD81 Cos=011DF3 Expected=011DF0 PASS # ** Failure: *** End of Test ***

Next remove all the std_logic_arith/std_logic_unsigned package references and replace them with the recommended numeric_std package :-)

Regards, Hans.

Thank you for your reply. I don't know the reason of:

Could you tell me that?

Thanks again.

We do appreciate, if it be possible to use a standalone Modelsim version of project. Would U plz upload it or give some clue. Sincerely. MrM

Try Altera or Xilinx, etc. for the web or student version where they bundle in a limited version of Modelsim.

KJ

I do not have any of following folders! simprim = D:/vendors/Xilinx/mti/simprim x55 = D:/hdl_designs/x55/work_mti XilinxCoreLib = D:/vendors/Xilinx/mti/xilinxcorelib altera_mf = D:/vendors/quartus/mti/altera_mf mercury = D:/vendors/quartus/mti/mercury Shared_lib = D:/DEMO/demo_hdl_designer/Shared_lib/work_mti ??

!!

If you write your own code, you won't need them. See the testbench example here:

.. snip

These are just Modelsim library mappings for my setup. I would suggest you delete the modelsim.ini file and create a new one using the vmap command. Then if required update the file with your primitive library mapping like simprim/lpm etc, this is easily done using the GUI (Right_Mouse_Button in the workspace tab -> new -> library),

Hans