Re: [CAD_CAM_EDM_DRO] Windows timing subroutines, how do they work?

> ibewgypsie wrote:
>
> >If there was someway to turn off the multi tasking
> of windows, All the
> >speed/accel/decel subroutines I do in visual basic
> crash or just lose
> >thier minds as windows goes off on it's own agenda.
> >
> >I threatened to put a pulse-generator/port timer to
> toggle a inbit on
> >the par port. It would not have worked.
> >
> >I even used the directX microsecond timer and it
> "almost" works till
> >you see the hard drive running and see your motor
> you are acceling
> >lose it's mind and break off the endmill.
> >
> >Linux has became so darned fit-all it is not much
> better. Someone
> >suggested a Lite version with less options.
> >
> >
> But, the real time code is REALLY real time! (At
> least in various versions
> with RTlinux and rtai.) There are "lite" versions
> of Linux that will
> boot from
> a CD, or even a floppy! They don't have everything
> in it, of course, but
> enough to do a lot.
>
> >As of now? DOS is the king, Mach2./3 works most the
> time here with
> >windows, I was told, maybe wrong that he uses a
> rtlinux type of kernel
> >to generate the timing.
> >
> >
> No, not at all. He uses a DLL that runs in real
> mode, essentially a
> device driver
> kind of code. It doesn't pre-empt Windows, like the
> RT Linux systems
> do, but just
> runs at a high priority.
>
> Jon
>
>
>
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