Re: [CAD_CAM_EDM_DRO] interpolation and algorithms of multiple axes was Re: Pulse Gen

Jeff, Mariss,

Tnx, IIRC? OK, so we do the Circ stuff up in software, do we still get
to use the board to help us with the circ stuff?

Alan KM6VV
PS, Sorry, that's Dropping in!


Jeff Barlow wrote:

>
> Alan,
>
> It's Donald Knuth, IIRC.
>
> Hold on there, I didn't say anything about circular interpolation in
> hardware. That's a whole other can of worms.
>
> The trick has always been to find the smallest part of a system that
> really has to be fast, and do only that part in hardware.
>
> Jeff
>
> On Wed, 06 Dec 2000 15:34:11 -0800, you wrote:
>
> >Hi Jeff,
> >
> >Thanks for "drooping in"! David (?) Knuth was the author I was trying
> >to think of. If I still have it (problem with "open libraries". So if
> >we need to implement a DDA for linear and circular interpolations, we
> >ought to do all that in hardware! Yeah, that's the ticket!
> >
> >It's still not clear to me if just generating a rate for each of the
> >axis involved in the move and waiting for the endpoint is OK. And, what
> >do you do for circular interp? Those rates are constantly changing, if
> >I understand it correctly. OK, then we constantly change the rates. It
> >will take me a while to ketch on! ;>)
> >
> >It is said that ANY software algorithm can be implemented in hardware.
> >So it is conceivable that we can implement Bresenham's algorithm in
> >hardware that some of us hobbyists can build too! That would certainly
> >be a GREAT BOX!
> >
> >Alan KM6VV
> >
>
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