OPENCORES.ORG

On Thu, 2005-06-02 at 15:42 +0200, secamiei@b... wrote:

  Hello,

  I am wrapping the Ethernet 10/1000 opencores IP with
  OPB2WB fot the slave WB if and WB2OPB for the master WB.

  Although the resulting design is synthesizable, the memory range for
  the OPB2WB (00h-FFh) is not big enough for that core (it needs
  from 0x000h to 0x7ff).

  Is possible the extension?

  Thanks,

         Armando

At 01:11 03/06/2005 +0700, you wrote:
>On Thu, 2005-06-02 at 15:42 +0200, secamiei@b... wrote:
> > I checked with Chipscope, and the transfer is acknowledged only when
> > the address is in range 0x80000000 ->0x800000ff. If you change the
> > address in
> > EDK, and you write to that address, the transfer is not acknowledged.
> > Now I am trying to build a system with 2 SPI cores (attached to the
> > OPB with 2 OPB2WB wrappers). I assigned in EDK 0x80000000->0x800000ff
> > to the first OPB2WB wrapper (connected to the first SPI core) and
> > 0x80000100->0x800001ff. I hope the wrappers will accept those address
> > ranges.
>
>
>The problem is that when I ship a netlist version of this wrapper,
>the parameters C_BASEADDR and C_HIGHADDR get compiled in to the
>netlist. I honestly do not know how to work around this problem.
>One way would be provide a non OPB input "SELECT" which would
>force the address decoding outside the core, but would require
>another level of abstraction.
>
>If somebody could figure out how to solve this problem, I would
>be happy to create a new release of the OPB/WB wrapper ...
>
>Regards,
>rudi
>=============================================================
>Rudolf Usselmann,  ASICS World Services,  http://www.asics.ws
>Your Partner for IP Cores, Design, Verification and Synthesis
>
>_______________________________________________
>http://www.opencores.org/mailman/listinfo/cores

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Armando Astarloa Cuéllar - Universidad del Pais Vasco UPV/EHU
Tecnología Electrónica
Departamento de Electrónica y Telecomunicaciones
Escuela Superior de Ingenieros - Email: jtpascua@b...
Ald. de Urquijo s/n             Tel.: 34 - 94 - 601 73 04
48013 BILBAO (SPAIN)    Fax.: 34 - 94 - 601 42 59
URL : http://det.bi.ehu.es/~apert
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