I would suggest looking at spliting up your system so that the realtime element of the CNC controller runs on a small embedded board.

You will then only need to write a simple windows program to send commands to the
CNC controller to instruct it how to cut (start position, stop position, speed, depth
and path). You could probably get away with using RS232 or the printer port for
the comm's.

Regards,
Damian

On Mon, 28 May 2001 22:15:28 GMT, Mark Evans <mevans@zyvex.com> wrote:
> 
> My advice is the following.  If you want true real-time performance with Windows compatibility, then you need a Windows API emulator that runs on a real-time kernel.  On-time sells exactly that.
> 
> 		http://www.on-time.com/
> 
> Personally I would never bother with Windows for hard real-time requirements.
> 
> You might also consider the WINE project with Real-Time Linux, but I am told that RT Linux is much less mature (more buggy) than Linux per se.
> 
> I'm no expert on DOSX but presumably if it runs under DOSX then it will run under Windows emulation.
> 
> Mark
> 
> 
> 
> On Sat, 26 May 2001 01:48:30 +0200, NancyEtRoland <nancyetroland@free.fr> wrote:
> > first i esitate to expose my problem here as it is not specificaly DM C++.
> > 
> > but i would like it to have a DM C++ based solution..
> > 
> > More informations:
> > 
> > a PC based little cnc machine:
> > 
> > - must run a real time softwear,
> > - must run a "'evoluted" OS because it is plugged on a LAN with other pc's,
> > a web cam is plugged on it, it is plugged on Internet  for remote mantenance
> > (Symantec pcAnywhere), etc..
> > 
> > well i don't feel like making all those drivers on MS-DOS..
> > 
> > The actual solution is:
> > 
> > A windows CAD/CAM program on the cnc and on the pc networked with it,
> > a DOSX program only on the cnc, for driving the cnc itself on real time mode
> > on pure dos.
> > 
> 
>