Fixed point signals not shown on waveform window

[SharpWeapon]

Hello,

I am working on fixed point signals using fixed_pkg_c.vhdl and fixed_float_types_c.vhdl packages. But I am not able to see the signals on the waveform window, how can I debug my fixed point signals/variables.

NB: I/O ports with fixed point type are not shown as well, I suppose at least this should have been on the waveform. :???:

Thanks!

 

[TrickyDicky]

Have you tried to add them? Modelsim works fine with them?

What version of modelsim are you using? You dont need fixed_pkg_c.vhd with newer versions (its included as part of the 2008 standard in the IEEE package).

 

[SharpWeapon]

Thanks TrickyDicky for the reply. I cant add them, they are not shown in the 'Object Name' list of the design unit. I am using ISim webpack version. I had an error without the packages added.

 

[SharpWeapon]

For anyone who might have same problem and/or future visitors: The problem was I just did a lazy typing mistake in my fixed point signal declaration. It was supposed to be:

signal <name>:sfixed(a downto -b);

what i have done was:

signal <name>:sfixed(a to -b);

Lazy indeed! :lol:
Well I paid the price, spent half a day trying to figure out what the heck was wrong with ISim.

Peace people!

 

[TrickyDicky]

Yup. Making them a to -b makes it a null array, and therefore has a length of 0