Re: [CAD_CAM_EDM_DRO] hpgl code and plotters was What does open mean?

I'm still tryin' to figure out the "speech writer" thing............

Do you find me a bit wordy ?

Plotters. Shhhhh ! I have been watching E-bay for the right one. Amazing to
see little HP's going for 9 bucks !

I am also confused on the "genetics".... ( I must be off wack tonight)

HPGL files were not too bad IF you could always send them as 1000 plotter
units to its destination. (Indexer let you do whatever you wanted in this
regard) The "standard" of 1016 made files real hard to understand. Otherwise
they are pretty simple.

Most Engraver companies developed hpgl "extensions" to do 3d work. The
problem is I do not think anyone ever made a "standardized" version.
Otherwise Indexer could have taken a pot shot at adding them to the hpgl
interface. I have a way to view the hpgl layout of probably a hundred or more
hpgl machines if you ever need to see a particular..... though the way things
go, the one you want I will not have access to !

Luberth.... I have not been there in a while. He at one time was pushing his
porn site.... (or someone forced it on him via hijacking) is that still there
??

It might be interesting to see if their work includes 3d application to hpgl
code.

I would like to know how hpgl was able to make such a stronghold in the
engraver/vinyl cutter market. G-code is so much better of an option.

Chris L

ballendo wrote:

> Hi Chris,
>
> A cnc speech writer? Hmmmm.
>
> I can't help remembering watching old vector plotters (bed style, so
> the paper is stationary). If you read the IX manual, and look at the
> command list, there appears to be more than a little HPGL "genetics"
> involved...
>
> And those plotters sure looked CVV to me! Took the rom chip out of an
> old HI dmp-40? and looked at the hex. Bausch and lomb copyright right
> there in the top of the file. So we didn't go further...
>
> A Z80 and CTC (timer/counter chip)= two axes of fast, smooth motion.
> I have tried to find source code for these old plotters, but have
> been unsuccessful. Still looking... Anyone??
>
> There are lots of people who have written NEW hpgl compatible stuff
> (like luberth and majosoft). It seems that in Europe the home cnc
> movement stems from HPGL- adapted for cutting...
>
> Ballendo
>
> P.S. Don Lancaster mentioned awhile back putting a plotter pen size
> dental air turbine in an old pen plotter and making pc bds/engraving.
> The dental turbine referenced in his column was a "disposable" model
> and about 20 bucks. Interesting concept, what with pen plotters being
> thrown away as obsolete left and right... Might be more info on his
> website at www.tinaja.com
>
>
> --- In CAD_CAM_EDM_DRO@y..., Chris L <datac@l...> wrote:
> <snip>
> Indexer "did" or "learned" something long ago about contouring
> > and high step rates without proprietary hardware. That says
> something....
> <big snip>
>
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