fixed point package Xilinx

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blach100

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hello

as I'm beginner in VHDL lang,
I want to use a fixed point representation in my code, I searched about it, and I found that I should download some packages.
In which Xilinx folder should I copy this package?

thank you.
 
Last edited:

Hello TrickyDicky
I have included it into my project,but currently I faced errors on the body package.It would be great if you can help me to solve this problems
 

did you download the xilinx compatible version?

- - - Updated - - -

And you need to read the documentation for the XIlinx version:

Things Xilinx m11.1i didn't like about these packages:
1) 'instance_name showed as a syntax error, replace with package name
2) "to_stdlogicvector(to_suv(arg))" shows as a type conversion error, replace
with casting "std_logic_vector()"
3) Did not like any of the fixed point division routines,
had to comment them out.
4) Had to comment out the "?=" routines, XST could not deal with that syntax.
 

i'm on Xilinx ISE design suite 14.1

1) 'instance_name showed as a syntax error, replace with package name
report fixed_pkg'instance_name
Click to expand...
I replaced it by ieee_proposed,
report fixed_pkg'ieee_proposed
Click to expand...

and it gives me :
Line 2038. Undefined symbol 'ieee_proposed'.
Click to expand...
 

ieee_proposed is not an attribute. So you need to replace fixed_pkg'ieee_proposed with "ieee_proposed"

- - - Updated - - -

or if you download the Xilinx version of the library available from vhdl.org/fphdl you wont need to change anything because its already been done.
 
hey TrickyDicky, you really rock )))))

I've just downloaded that file from vhdl.org/fphdl which was Tested with Xilinx M12.4i,
and it works without any change in it.

thank you so much Mr.
 

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