Re: [Discuss-gnuradio] USRP2 and ISE 12

The problem is not the aeMB, it is how ISE is synthesizing it. We have
been working on this problem and are very close to having a solution.

Matt

On 05/20/2010 08:22 AM, Tiago Rogério Mück wrote:
> Well, it seems the aeMB guys are working on a new version of the the
> core. Maybe the new core will perform better.
>
>
> Em 14 de maio de 2010 18:17, Brian Padalino <bpadalino@gmail.com
> <mailto:bpadalino@gmail.com>> escreveu:
>
> 2010/5/14 Tiago Rogério Mück <tiago@lisha.ufsc.br
> <mailto:tiago@lisha.ufsc.br>>:
> > Hello,
> >
> > It seems that everyone is having troubles with ISE 11.x, but has
> anyone
> > tried the new ISE 12 ?
> >
> > We have successfully synthesized the USRP2 fpga code with ISE
> 12.1, but we
> > got a timing error and the bitstream didn't seem to work:
> find_usrps didn't
> > find anything and the leds didn't flash.
> >
> > We are using the latest code from the repositories for both fpga and
> > firmware.
> >
> > Is there anyone who has tried ISE 12 and want to share the
> experience ?
>
> I am not building the USRP2 FPGA, or have experience with ISE 12, but
> the errors you have are all related to BRAM feeding the aeMB CPU -
> more specifically RAM output -> Mux -> Adder -> FF, mostly with 7 to
> 10 layers of logic inbetween.
>
> Good luck debugging that portion of the CPU. Hopefully you can
> achieve timing closure.
>
> Brian
>
>
>
>
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