dct verilog

elektroda.net NewsGroups Forum Index - FPGA - dct verilog

Shakes
Guest

Wed Sep 01, 2010 4:43 am

hi,

I downloaded the DCT verilog module from the altera website.
http://www.altera.com/support/examples/verilog/ver_dct.html

I ran a simulation using simple testbench that sends 0,1,2,...63 as
the input parameters. The dct_out(output signal) never sends out any
result and it always xxxxxx. From the initial basic understanding of
the code, the reading the writing of local memory seems done
incorrectly.

Also the original code has some compilation errors which is given
below. Some of the reg needed to be converted to wires to compile. It
didn't not seem to alter the functionality.

Error (10663): Verilog HDL Port Connection error at dct.v(8 Cool

: output
or inout port "result" must be connected to a structural net
expression.

Is this IP tested and verified?

Thanks
regards
Shakith

glen herrmannsfeldt
Guest

Wed Sep 01, 2010 4:59 am

Shakes <shakith.fernando_at_gmail.com> wrote:

Quote:

I downloaded the DCT verilog module from the altera website.
http://www.altera.com/support/examples/verilog/ver_dct.html

I ran a simulation using simple testbench that sends 0,1,2,...63 as
the input parameters. The dct_out(output signal) never sends out any
result and it always xxxxxx. From the initial basic understanding of
the code, the reading the writing of local memory seems done
incorrectly.

I think you can do DCT as a systolic array. I didn't look at
the web site to see if that is what it is doing, though.

-- glen

KJ
Guest

Wed Sep 01, 2010 5:01 am

On Aug 31, 9:43 pm, Shakes <shakith.ferna...@gmail.com> wrote:

Quote:

Is this IP tested and verified?

From the readme file...

Contacting Altera
================
Although we have made every effort to ensure that this design example
works
correctly, there might be problems that we have not encountered. If
you have
a question or problem that is not answered by the information provided
in this
readme file or the example's documentation, please contact your Altera
Field
Applications Engineer.

If you have additional questions that are not answered in the
documentation
provided with this function, please contact Altera Applications:

World-Wide Web: http://www.altera.com
http://www.altera.com/mysupport/
Technical Support Hotline: (800) 800-EPLD (U.S.)
(408) 544-7000 (Internationally)

d_s_klein
Guest

Fri Sep 03, 2010 1:29 am

On Aug 31, 6:43 pm, Shakes <shakith.ferna...@gmail.com> wrote:

<snippage>

Quote:

Some of the reg needed to be converted to wires to compile.

Is this IP tested and verified?

The statement above answers the question (above).

How much testing would you expect to be completed on a module that
doesn't compile?

RK

elektroda.net NewsGroups Forum Index - FPGA - dct verilog