ieee_ proposed library

vlib ieee_proposed vcom -work ieee_proposed somefile.vhd vcom -work ieee_proposed someotherfile.vhd ... etc

-- Mike Treseler

I would suggest not using the propossed functions unless you are required to.

Unless those functions have been donated by a synthesis company they are highley unlikely to be supported when you need to synthesize to gates.

..

I am not sure about the Student Edition but in the commercial PE version (I use 6.3d) these packages are already supplied as standard. Have a look in your \vhdl_src\floatfixlib\ directory.

In my PE version they are compiled into floatfixlib:

Library floatfixlib; use floatfixlib.float_pkg.all;

signal A32,B32:float(8 downto -23); signal Y32 : float(8 downto -23);

A32

he

I appreciate your help. I will try to use the floatfixlib library you mentioned and see how it goes.

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I am getting the following error when i try to make ieee_proposed library. Modelsim > vcom -work ieee_proposed float_pkg_c.vhd # Model Technology ModelSim PE Student Edition vcom 6.3c Compiler

I was successful is adding the math_utility_pkg.vhdl. I am however getting the same error while adding fixed_pkhg_c.vhd and float_pkg_c.vhd.

It seems likely that you've used the [vmap] command to map logical library name "ieee_proposed" to physical library directory "C:\Modeltech_pe_edu_6.3c\ieee_proposed" and the backslashes have been stripped by Tcl. Change the mapping to have forward slashes in the pathname, and all should be well. Also, to play safe, take a look in the currently-applicable "modelsim.ini" file and see if there are backslashes in the library-mapping pathnames there - if so, replace them with forward-slash.

I am still getting the same problem. Is there an alternate way of doing this? Can you please tell me the steps i need to follow to add the ieee_proposed library to Modelsim.

Thanks

Not precisely, because it depends on the location of things in your setup. I would do something like this...

vlib c:/existing/directory/ieee_proposed_lib vmap ieee_proposed c:/existing/directory/ieee_proposed_lib vcom -work ieee_proposed c:/source/directory/float_pkg_c.vhd

Note also that any pathname containing spaces MUST be enclosed in quotes "" or braces {} so that Tcl does not interpret the spaces as word separators.

As usual, once you've done the "vlib" and "vmap" commands you don't need to do them again; the library mapping will be written into the local modelsim.ini file and will then be used automatically whenever you run ModelSim in that directory.

Ghastly thought: You're not actually running Modelsim in its installation directory, are you? That's disastrous because it has a read-only modelsim.ini file. Make sure you've changed Modelsim's working directory to some place where you have full read/write access.

HTH

You are right. I was running Modelsim in the installation directory. Thank you very much for pointing that.