Re: [CAD_CAM_EDM_DRO] Driving the parallel port in WindowXP

On Thursday 10 August 2006 15:11, Alan Marconett wrote:

> HI Kory,
>
> Ah, the age-old problem!
>
> Even with Linux, you will need a special core routine, or a special build,
> if I'm not mistaken.
>
> So DOS may be required!
>

I'm not sure if it's at that point. The easiest way to do it would be to
follow EMC's instructions to install ubuntu and then add a realtime kernel:
http://www.linuxcnc.org/index.php?option=com_content&task=view&id=21&Itemid=4
or
http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Installing_EMC2
It should be pretty straightforward.

Also, consider that even if the bulk of machinists use windows these days,
they probably aren't passionate about what operating system their machine
controller is running. I've been running debian for the last five years, so
that biases me a little bit. Unless you are wedded to a particular windows
gui library, you shouldn't have any trouble writing a linux gui.

What kind of application are you thinking of writing? Is it something that
would be useful to build into emc? There are a fairly large number of people
using it, I think, and it has an active developer community, so if you add
your code to emc, more people may end up using it.

-Sebastien Bailard

> OR, start revving up on USB, which is what many are doing. Then buffer
> your data out, and let a PIC or USB device clock data changes out at their
> best interrupt rate.
>
> Alan KM6VV
>
> > [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Kory Hamzeh
> >
> > I have a CNC application that I would like to write and I need to decide
> > it if should be DOS based or Windows. I would like to write it in
> > Windows because I want the UI to be graphical, but I do have concerns
> > about driving the parallel port reliably and consistently (timing wise).
> > Are there any API's, docs, or tricks for this? Another option would be
> > Linux, which I have a lot of experience with, but I'm not certain now
> > many machinists use Linux for CNC.
> >
> > Regards,
> > Kory
>
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