OPENCORES.ORG

Hello,
    maybe your OpenRISC architecture manual is a bit outdated, as the 
latest version includes the instruction you are talking about (which I 
also don't mind at all having), I'll paste the description directly 
from it:

Format:
l.cmov rD,rA,rB
Description:
If SR[F] is set, general-purpose register rA is placed in
general-purpose register rD. If SR[F] is cleared, general-purpose
register rB is placed in general-purpose register rD.

I find it a very good call to include it in the ISA. Regards,

      Victor Lopez 

> 
> On Sat, 15 May 2004, Damjan Lampret wrote:
> 
> : Actually, I was doing a lot of analysis in 1999 looking at the 
Alpha model
> : and comparing it to the traditional model of flags. If you remember 
at the
> : time I defined only one true flag and that is "F" flag; the one set 
by sfXX
> : instructions. Everything else like CY came later and these are not 
real
> : flags... The alpha model doesn't have much advantage.
> 
> I do not have any problems at all with having a single -flag- 
register.
> But I wouldn't miss a "set register if flag is set" instruction, or
> simply a copy-flag-to-gpr instruction.  This would not break the
> current ISA, but could be seen as an extension.  Maybe something to
> think about for the next revision?
> 
> Hope you're feeling better, Damjan.
> 
> ~j
> 
> 
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