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From: kevinlinsun@h...<kevinlinsun@h...>
Date: Wed May 5 11:37:57 CEST 2004
Subject: [openrisc] Is there something wrong when WB:RISC clock = 1:1?
thank you.i'll try once more.
best regards,
kevin

----- Original Message -----
From: Damjan Lampret<lampret@o...>
To:
Date: Tue May 4 19:22:54 CEST 2004
Subject: [openrisc] Is there something wrong when WB:RISC clock =
1:1?

> Quoting or1200_defines.v
>
> // If you plan to run WB:RISC clock fixed to 1:1, disable
> // both defines
> In general however I'd recommend you to enable
> OR1200_CLKDIV_2_SUPPORTED
> and disable (comment out)
> OR1200_CLKDIV_4_SUPPORTED
> and set clmode_i port to 2'b00.
> regards
> Damjan
> ----- Original Message -----
> From: <kevinlinsun@h...>
> To: <openrisc@o...>
> Sent: Tuesday, May 04, 2004 7:09 PM
> Subject: Re: [openrisc] Is there something wrong when WB:RISC
clock
> = 1:1?
> > Hi
> > Thanks for your reply.
> > but i just want to make WB:RISC clock = 1:1.how should i do?
> >
> > best regards,
> > kevin
> >
> > ----- Original Message -----
> > From: Damjan Lampret<lampret@o...>
> > To:
> > Date: Mon May 3 11:59:14 CEST 2004
> > Subject: [openrisc] Is there something wrong when WB:RISC
> clock =
> > 1:1?
> >
> > > Kevin
> > >
> > > you first have to learn to read the comments in front of
> defines.
> > > or1200_defines.v says:
> > > //
> > > // Clock ratio RISC clock versus WB clock
> > > //
> > > // If you plan to run WB:RISC clock fixed to 1:1, disable
> > > // both defines
> > > //
> > > // For WB:RISC 1:2 or 1:1, enable
> OR1200_CLKDIV_2_SUPPORTED
> > > // and use clmode to set ratio
> > > //
> > > // For WB:RISC 1:4, 1:2 or 1:1, enable both defines and
> use
> > > // clmode to set ratio
> > > `define OR1200_CLKDIV_2_SUPPORTED
> > > //`define OR1200_CLKDIV_4_SUPPORTED
> > > Conclusion: for 1:4 you need to enable both defines. Why
> are you
> > > commenting
> > > out OR1200_CLKDIV_2_SUPPORTED??
> > > regards,
> > > Damjan
> > > ----- Original Message -----
> > > From: <kevinlinsun@h...>
> > > To: <openrisc@o...>
> > > Sent: Tuesday, April 20, 2004 6:00 AM
> > > Subject: [openrisc] Is there something wrong when WB:RISC
> clock =
> > > 1:1?
> > > > Hi
> > > > When i comment "`define
> OR1200_CLKDIV_2_SUPPORTED"
> > > > and "`define OR1200_CLKDIV_4_SUPPORTED" or
> set
> > > clmode_i = 2'b00,
> > > > the system seems to be in a wrong state.Who can tell
> me how to
> > > make
> > > > WB:RISC clock = 1:1?
> > > >
> > > > best regards,
> > > > kevin
> > > > _______________________________________________
> > > > http://www.opencores.org/mailman/listinfo/openrisc
> > > >
> > >
> > >
> > _______________________________________________
> > http://www.opencores.org/mailman/listinfo/openrisc
> >
>
>