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Re: [f-cpu] Another simulator!



On Fri, 24 Jan 2003 04:40:03 +0100
Michael Riepe <michael@stud.uni-hannover.de> wrote:

> On Thu, Jan 23, 2003 at 05:41:20PM +0100, Yann Guidon wrote:
> [...]
> > Note that in order to be both attractive and efficiently coded,
> > one has to take ultra-wide register sizes from the start.
> [...]
> 
> I tried to, but I don't know if I got everything right.  E.g. will
> special registers grow as well?  What does loadaddr calculate when
> general registers are wider than 64 bits?  Will loadconsx really
> sign-extend to the full register size, or only to 64 bits?  Will `jmp
> r1, r2' ignore the

From the beginning of the story, register could grow but the size of the
manipulated date stay at 64 bits. It's only for SIMD stuff (256=4*64).

So there is no real question from my point of view.

nicO

> high part of r1, and will it clear or sign-extend the value put into
> r2? Or maybe copy the remaining bits from r1?
> 
> Lots of questions.
> 
> -- 
>  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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