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Re: [f-cpu] Re: Floating-Point
Michael Riepe a écrit :
>
> On Sun, Aug 19, 2001 at 03:23:50PM -0400, nicO wrote:
> > Just one point about SIMD FP. I think that SIMD flag should means an
> > others thing that for integer (no need for 8 bit).
> > What about 16 32 64 128(80 ?) ? 4 differents precisions, the last don't
> > need to be implemented in FC0.
>
> The manual says:
>
> 00 32-bit
> 01 64-bit
> 1x unassigned
>
> and the second one...
>
Yep, but you speak about an 16 bit shunk size.
> On Sun, Aug 19, 2001 at 05:33:05PM -0400, nicO wrote:
> > Hello,
> >
> > I'm looking for the "usual" definition of the port of a unit :
> >
> > 3 data in,
>
> Or less.
>
Yep!
> > 2 data out,
>
> Or more.
>
MORE ? I beleive that the fc0 is 3r2w (which give the number of register
bank port). So ?
> > SIMD flag,
>
> Make that `chunk size'; I use std_ulogic_vector(2 downto 0) for it.
>
The same of the instruction ?
> > clk,
> > enable or start,
> > reset,
> > something for the exception ?
> >
> > If there is something to say if the outed data is correct or not ?
>
> Currently not; the scheduler should know. But we can add a `here is
> the result, take it or I'll throw it away in the next cycle' signal.
>
Maybe, it's not useful but it could at least help for debugging.
> Something is missing: the lines that select the instruction to execute
> (if the unit can handle more than one instruction).
>
Could have many enable flag, corresponding to each differents
instructions ?
nicO
> --
> Michael "Tired" Riepe <Michael.Riepe@stud.uni-hannover.de>
> "All I wanna do is have a little fun before I die"
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