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VHDL - reduce the CLB

 
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Old 10-24-2004, 01:49 PM   #1
Default reduce the CLB


hello, everyone, i am a new comer here.

i would like to ask how can i reduce the usage of the CLB when coding VHDL?
cos i am using a rather old series of xilinx board(sparten s10pc84) and it
only get 196 CLB.

would anyone kindly suggest any technique to optimize the code so that less
CLB usage can be achieved?
any comments welcome
thx!!





DAvid
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Old 10-24-2004, 05:23 PM   #2
Mike Treseler
 
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Default Re: reduce the CLB
DAvid wrote:

> i would like to ask how can i reduce the usage of the CLB when coding VHDL?
> cos i am using a rather old series of xilinx board(sparten s10pc84) and it
> only get 196 CLB.
>
> would anyone kindly suggest any technique to optimize the code so that less
> CLB usage can be achieved?


I would expect only a small improvement by optimizing code,
unless you can cut something out.

You might evaluate other synthesis tools, a newer board
or schematic entry.

-- Mike Treseler


Mike Treseler
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Old 10-24-2004, 06:15 PM   #3
Hung
 
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Default Re: reduce the CLB
thx

I have heard that using less assignmnet, less looping, and less variable ,
also, combine different if statement into one
will help, is it true
(it means hard-code all the thing?)
"Mike Treseler" <>
???????:rY-dnXzZDvqVSubcRVn-...
> DAvid wrote:
>
> > i would like to ask how can i reduce the usage of the CLB when coding

VHDL?
> > cos i am using a rather old series of xilinx board(sparten s10pc84) and

it
> > only get 196 CLB.
> >
> > would anyone kindly suggest any technique to optimize the code so that

less
> > CLB usage can be achieved?

>
> I would expect only a small improvement by optimizing code,
> unless you can cut something out.
>
> You might evaluate other synthesis tools, a newer board
> or schematic entry.
>
> -- Mike Treseler





Hung
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