Re: SwiftX68K and USB BDM Interfaces

You could take any little SBC with a fast serial port on one side and enough
parallel I/O lines for the BDM on the other and make a "SwiftX XTL
converter". Our serial XTL protocol is published in the manual. The BDM
protocol is published in the FreeScale (formerly Motorola) manual.

If you set the XTL baud rate in your project's Config.f file (see below),
the XTL is automatically switched over from BDM to serial. The host would
communication with your converter using the standard serial protocol which
would then perform the BDM activities on your behalf. I have never actually
implemented this, but it doesn't seem to difficult.

Establish serial XTL and set its baud rate:

115200 XTL-BAUD

> -----Original Message-----
> From: swiftx-bounce_at_forth.com [mailto:swiftx-bounce_at_forth.com]On Behalf
> Of Noel Henson
> Sent: Tuesday, September 14, 2004 05:38
> To: swiftx_at_forth.com
> Subject: [swiftx] Re: SwiftX68K and USB BDM Interfaces
>
>
> Kevin,
>
> On Monday 13 September 2004 05:10 pm, Appert, Kevin wrote:
> > For a ridiculously high price, I'll build one for you.
>
> Wow! Thanks!
>
> >
> > Why would you want such a thing?
>
> I'm trying to finally ditch the last of my Windows PCs. For years now,
> SwiftX68K has been my only Windows application.
>
> >
> > My design:
> > Your computer --(USB)-->A PC104 or II-SBC62 box I'll by for you
> > with a USB and a PP---->BDM
>
> Perhaps an FT232 USB interface chip and a cheap PIC for bit
> twiddling would
> do the trick, technically. I'd have to get the Pro version to change the
> interface code a bit. Hmmm. Maybe I'll do that.
>
>
> >
> > Leon, of course could do it in a much more straightforward fashion at
> > lower cost.
>
> I'm sure he could.
> <Off Topic>
> Don't you just love working with the people at Forth, Inc.? They
> are really
> a bright bunch.
> </Off Topic>
>
>
> >
> > Would a USB->bidirectional printer port adapter work? Is there such a
> > thing?
>
> Nope. They're built for actual data transfer, not for bit twiddling.
>
> >
> >
> > -----Original Message-----
> > From: swiftx-bounce_at_forth.com [mailto:swiftx-bounce_at_forth.com]On Behalf
> > Of Leon Wagner
> > Sent: Monday, September 13, 2004 4:14 PM
> > To: swiftx_at_forth.com
> > Subject: [swiftx] Re: SwiftX68K and USB BDM Interfaces
> >
> >
> > No. We interface directly to the parallel port for the "bit-banged"
> > BDM.
> >
> > > -----Original Message-----
> > > From: swiftx-bounce_at_forth.com [mailto:swiftx-bounce_at_forth.com]On
> >
> > Behalf
> >
> > > Of Noel Henson
> > > Sent: Monday, September 13, 2004 16:14
> > > To: 'swiftx_at_forth.com'
> > > Subject: [swiftx] SwiftX68K and USB BDM Interfaces
> > >
> > >
> > > Are there any USB BDM interfaces that work with SwiftX68K?
> > >
> > > Thanks,
> > > Noel
> > >
> > > --
> >
> > ----------------------------------------------------------------------
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> --
>
> ------------------------------------------------------------------
> Noel Henson
> www.noels-lab.com Chips, firmware and embedded systems
> www.vimoutliner.org Work fast. Think well.
>
> ----------------------------------------------------------------------
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>

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Received on Tue Sep 14 2004 - 10:23:16 PDT