Pulse Gen

Hi to the list,

This is part of an E-mail I sent to Mariss directly: (Yeah, and a lot of
other mail!)

"
... 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 (whose not sure WHAT he started)