Re: [CAD_CAM_EDM_DRO] Pulse Gen

Alan,

Yup, I know what you mean. I've been thinking along those same lines. I
just haven't convinced myself we _need_ to do all that in hardware.
Software is cheap and so am I.

Jeff

On Thu, 07 Dec 2000 20:41:38 -0800, you wrote:

>
>... You mentioned delta registers before (I think), I almost think they
>could be changed to accomplish the line/circle. I might be imagining
>things, but I still think your block diagram looks like a basic DDA!
>Not that I'm real familiar with one ;>)
>
>Parallel would be fine. I don't believe the interrupts are that big a
>problem! (DOS). Windows, I don't know. FIFO might ease that out. How
>to test out flow from a Windoz application?
>"
>
>Anyone see what I think I'm seeing? If DDA's do INTEGER calculations to
>draw lines/circles, then what would a DDA "engine" look like in
>hardware? Do we need a major axis counter to complete it? We would do
>the 8 octants for lines/circles in the software, and the "engine" would
>just cut an OCTANT, reload, next... Or a straight line would be done as
>well.
>
>I don't think this is too far off from what Ron is asking, either. A
>simple poll of a bit at end of OCTANT (or line) could be used, if an
>interrupt system wasn't wanted.
>
>
>Just some thoughts
>
>Alan KM6VV