Re: [f-cpu] some technical stuff (yeah :-D)

[Yann Guidon <whygee@f-cpu.org>]

Michael Riepe wrote:
> On Thu, Jun 14, 2001 at 12:29:01PM +0200, Yann Guidon wrote:
> [...]
> > nota for later : we have to add an instruction for the ROP2 unit :
> > SELECT which is a 2-input multiplexer (3r1w instruction). This is
> > optional but can help reduce the pressure on 'predicate-hungry' codes.
> 
> You mean, like `a ? b : c' in C, but working on individual bits,
> i.e. equivalent to `(a and b) or ((not a) and c)'?

yup.
the more i program, the more i think it's useful.
on top of that, it's very easy to do on the ROP2.


> What about a variable internal clock?  Using a (programmable) NCO,
> we could increase/decrease the clock frequency without any glitches.
that's what i consider most.
On top of that, the clock can be controlled by a HW real time controller
which analyses how many instructions are executed etc...
so the NCO can be matched to the real CPU activity.
i'm pretty sure that somebody has already patented it bu why care ?

>  Michael "Tired" Riepe <Michael.Riepe@stud.uni-hannover.de>
WHYGEE
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