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Hello Sami,

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.

----- Original Message ----- 
From: Armando Astarloa<jtpascua@b...> 
To: 
Date: Wed Jun  1 17:38:18 CEST 2005 
Subject: [oc] OPB2WB wrapper + SPI lite 

> Hello Sami, 
>  I dont know if it is possible to change that address, because what 
>  we have is the netlist, not the source code. Who could answer that 
> question is Rudolff who 
>  made it. 
>  If different address is used, you can check with the OPB-Chipscope 
>  that the opb transfer is not acknoledge and the timeout signal is 
> set. 
>  One solution is not to wrapp a single core but a Wishbone system 
> (including 
>  a memory decoder with one stb and address at the input, and the 
> strobes 
>  for the different cores at the output). 
>  Regards, 
>  Armando 
> At 16:46 01/06/2005 +0200, you wrote: 
> >Hi Armando, 
> > 
> >I used the same solution as you, and the OPB2WB wrapper works. 
> >But now there is one other problem. The wrapper works only if I 
> try to 
> >write to the 0x80000000 address. If I change the address range 
> of the 
> >OPB2WB wrapper in EDK to in example 0x80018000, the OPB2WB does 
> not 
> >work, I mean it does not assert CYC and STB signals. I tryed to 
> change 
> >the PARAMETER C_BASEADDR=32'h8000_0000 C_HIGHADDR=0x800000ff to 
> >C_BASEADDR=0x80018000 C_HIGHADDR=0x800180ff, but it does not 
> work. 
> >It works always only if I write to 0x80000000. 
> >This is a problem because if I use 2 WB cores, it means that I 
> need 2 
> >wrappers in EDK, but they must have different address ranges, 
> >otherwise all data will be sent to both cores. But the wrappers 
> works 
> >only in the same address range 0x80000000 -> 0x800000ff . 
> >I hope I was clear in my explanation. 
> >Thanks for any suggestion. 
> >Regards 
> > 
> >Sami (secamiei) 
> >----- Original Message ----- 
> >From: Armando Astarloa<jtpascua at b...> 
> >To: 
> >Date: Wed Jun 1 12:22:33 CEST 2005 
> >Subject: [oc] OPB2WB wrapper + SPI lite 
> > 
> > > At 14:51 16/05/2005 +0200, you wrote: 
> > > >EDK does not allow connection between different size 
> buses, how 
> > > can I 
> > > >connect the WB 32 bit wrapper to the SPI 8 bit data 
> bus ? 
> > > Hello Sami, 
> > > After fixing some problems i´ve used successfully 
> the opb2wb 
> > > wrapper with a WB core of my own (EDK 7.1). 
> > > Some of these clues are taken from the FPGA mailing list 
> > > 0- I´ve changed the data and address vectors of my 
> WB core to 
> > > adapt it to 
> > > the 32 buses of the wrapper 
> > > 1- Download the wrapper from opencores 
> > > 2 - Copy the wrapper files to pcores directory 
> > > 3- Change the bbd file to 
> > > 
> > > 
> 
>
>################################################################################

> > 
> > > ## 
> > > ## Copyright (C) 2000-2004 ASICS World Services, LTD. 
> > > ## www.asics.ws 
> > > ## http://www.opencores.org/mailman/listinfo/cores 
> > > 
> > > 
> 
>
>----------------------------------------------------------------------------------------------------------------------

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

> > 
> > > 
> > > 
> >_______________________________________________ 
> >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 at bi.ehu.es 
> 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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> 
> 