Re: [CAD_CAM_EDM_DRO] Re: Windows Real-time

Phil:
Thanks, I appreciate it. I think the problem might be with my 256k
buffer allocation for the ring buffer. I probably should dynamically
allocate then lock it, instead
I went the "easy" way and created a static buffer of 256k.
Perhaps the other unit is a little low on protected memory and can't
spare the 256k. I'll check into doing
it the "proper" way with a globalalloc function.

Art

----- Original Message -----
From: <phil@...>
To: <CAD_CAM_EDM_DRO@egroups.com>
Sent: Monday, November 27, 2000 4:44 AM
Subject: [CAD_CAM_EDM_DRO] Re: Windows Real-time


> Art,
>
> I downloaded the updated version, but it still locks up the machine
> immediately.
>
> This morning I tried the VxD on a Windows 98 computer at work and it
> seems to work fine. So it must be something screwy with the other
> computer. The computer at work is a Dell PIII 866Mhz machine.
>
> I will take a closer look at the AMD K6-2 machine tonight and see if
> I can come up with why it locks up. I have SoftICE from Compuware
> which will allow debugging of VxDs...
>
> Regards,
>
> Phil Covington
>
>
> --- In CAD_CAM_EDM_DRO@egroups.com, "Art Fenerty" <fenerty@h...>
> wrote:
> > Phil :
> > Turns out I was initializing the IO48 board regardless
> > whether you had one or not. This might have created the lockup. I
> have
> > replaced the cnc.zip file with an updated version. Thanks for the
> help. It
> > may not cure the problem you encountered, though.
> > Art
> >
> > ----- Original Message -----
> > From: "Art Fenerty" <fenerty@h...>
> > To: <CAD_CAM_EDM_DRO@egroups.com>
> > Sent: Sunday, November 26, 2000 7:10 PM
> > Subject: Re: [CAD_CAM_EDM_DRO] Windows Real-time
> >
> >
> > > Thanks for the feedback Phil. Thats the first lock-up report I've
> gotten.
> > > Hopefully, more folks will have the same problem, so I can get
> some
> > pointer
> > > to the problem.
> > >
> > > Art
> > >
> > > ----- Original Message -----
> > > From: "PhilC" <phil@p...>
> > > To: <CAD_CAM_EDM_DRO@egroups.com>
> > > Sent: Sunday, November 26, 2000 1:18 PM
> > > Subject: Re: [CAD_CAM_EDM_DRO] Windows Real-time
> > >
> > >
> > > > Art,
> > > >
> > > > I tried your VxD on a Windows 98 machine here and it locks the
> machine
> > up
> > > > immediately. The machine is an AMD K6-2 400 Mhz, 256 MB RAM,
> ATI 3D
> > Rage
> > > > Pro AGP Video, Creative E1371 Sound, LNE100TX Network card,
> Aladdin
> > > Chipset.
> > > > I don't have any Win95 system to try it on... all the rest of
> the
> > machines
> > > > run either Win2k or Linux...
> > > >
> > > > Regards,
> > > >
> > > > Phil Covington
> > > >
> > > > ----- Original Message -----
> > > > From: "Art Fenerty" <fenerty@h...>
> > > > To: <CAD_CAM_EDM_DRO@egroups.com>
> > > > Sent: Saturday, November 25, 2000 12:12 PM
> > > > Subject: Re: [CAD_CAM_EDM_DRO] Windows Real-time
> > > >
> > > >
> > > > > Alan:
> > > > >
> > > > > The interface is an automation object (COM) written in
> C++. It's
> > > only
> > > > > purpose is to send data to the VXD which is mostly assember.
> The VXD
> > > > accepts
> > > > > 4-byte commands
> > > > > where the first byte is motor step and direction for each of
> 4-axis,
> > and
> > > > the
> > > > > next two bytes are a number from 0-8191
> > > > > which is the frequency in hertz to wait till the next pulse.
> > > > > The VXD has a 64000 integer buffer so even at 8khz you have
> several
> > > > > seconds (8) to do work before you need to add to the buffer.
> The
> > buffer
> > > is
> > > > a
> > > > > ring buffer that just keeps looping around. There will be a
> series of
> > > > > command that can be used such as Spindle( on | off )..Aux1(
> on | off)
> > > and
> > > > > AddToBuffer( int* ); As well as a callback function for
> emergency
> > stop.
> > > > This
> > > > > should make it rather easy to do real time in windows. It
> seems to
> > work
> > > as
> > > > > well as any dos version of stepping does.
> > > > >
> > > > > Art
> > > >
> > > >
> > > >
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> > >
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>
>
> Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the
discussion of shop built systems, for CAD, CAM, EDM, and DRO.
>
> Addresses:
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> bill,
> List Manager
>