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PICList Thread
'DCC'
1996\04\26@225840 by Shel Michaels

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In a message dated 96-04-26 22:19:34 EDT, Todd Peterson writes:

>speaking of railroads, does anyone know a good source of information on the
>"DCC" model railroad communications setup?  The magazine Model Railroader
>lists several companies offering DCC-compatible equipment - it looks to be
>catching on.

  DCC (Digital Command Control) has a very active standards group.  The many
dedicated volunteers have done an exceptional job of creating a unifying
standard of communication for model railroad setups.  They work under the
aegis of the NMRA (National Model Railroad Association), their home page is:
http://www.mcs.net/~weyand/nmra/nmrahome.html
The standards themselves are purchasable as print at some model railroad
stores, and are supposed to be available on the net sometime - I'm not sure
if they're there now.

  For more information you might also wish to read the rec.models.railroad
group.

  I have programmed my PIC 16C74 to interpret DCC command signals using the
capture/compare ports.  Works rather slick.  I'm continually amazed by the
power of a simple little PIC.  It can simultaneously send/xmit RS232, capture
DCC data (pulse widths range from <100 usec. to >1 msec.), send/receive X-10
commands via the TW523 module, respond to once-per-msec. interrupts, and
still have time to loaf.  I really love these PICs.  I wish the
capture/compare module were available in some of the smaller physical
packages, however.

Best regards to the group,
...Shel Michaels
spam_OUTsbmichaelsTakeThisOuTspamaol.com
http://members.aol.com/sbmichaels

1996\04\29@133642 by Martin J. Maney

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On Fri, 26 Apr 1996, Shel Michaels wrote:

>    DCC (Digital Command Control) has a very active standards group.  The many
> dedicated volunteers have done an exceptional job of creating a unifying
> standard of communication for model railroad setups.  They work under the
> aegis of the NMRA (National Model Railroad Association), their home page is:
> http://www.mcs.net/~weyand/nmra/nmrahome.html
> The standards themselves are purchasable as print at some model railroad
> stores, and are supposed to be available on the net sometime - I'm not sure
> if they're there now.

See also D.S.Dawdy's Cyberroad pages at

 http://www.mcs.net/~dsdawdy/cyberoad.html

He seems to have more information on DCC per se, where Rich Weyand hosts
the NMRA's home pages.  I thought there used to be an online (draft) DCC
standard, but I don't thin it's there any longer.  Then again, the link
that's supposed to lead to the "NMRA standards and documents" section
weren't working when I was poking around.  I believe you can find that
link from various places in both Dawdy's and Weyand's web sites.

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