Ask for materials about the origin, history, recent applications and developing trend of fieldbus

Ask for materials about the origin, history, recent applications and developing trend of fieldbus

Post by Yon » Mon, 27 Sep 2004 16:06:24



Dear friends:
Could anyone be so kind to provide me with some materials about the
origin, history, recent applications and developing trend of fieldbus?
Thank you, very much!

Best regards,

Yong Liu

 
 
 

Ask for materials about the origin, history, recent applications and developing trend of fieldbus

Post by Grant Edward » Tue, 28 Sep 2004 00:45:29



Quote:> Could anyone be so kind to provide me with some materials about the
> origin, history, recent applications and developing trend of fieldbus?
> Thank you, very much!

Which fieldbus?

--
Grant Edwards                   grante             Yow!  I'm using my X-RAY
                                  at               VISION to obtain a rare
                               visi.com            glimpse of the INNER
                                                   WORKINGS of this POTATO!!

 
 
 

Ask for materials about the origin, history, recent applications and developing trend of fieldbus

Post by Vincent Crabtre » Thu, 30 Sep 2004 23:01:22



Quote:> Could anyone be so kind to provide me with some materials about the
> origin, history, recent applications and developing trend of fieldbus?

Is this a home work question?

Vincent

 
 
 

1. Recent splintering; a trend?

     Generally, whenever anyone utters a phrase like "the balkanization
of Linux" I treat it with the same deep respect I give to "impending
modem tax" or "imminent death of UseNet".  Lately though, I'm seeing a
trend that sort of gives me pause.  Two incidents leap to mind:

          1.) Promise is now offering beta linux drivers for their
              Ultra/66 controler card.  The drivers are specific
              to the RedHat distro (with support for others to
              follow shortly).

          2.) Metrowerks has ported CodeWarrior to Linux; a version
              for RedHat and another for SuSE.

     Since we're talking about the same kernel, I'm trying to
understand why different versions of such things are necessary.
Perhaps the answer is so simple I just don't see it.
     In the case of the drivers, I'm wondering if the reason is more
political than technical (ie: RedHat has a hand in the programming, I
believe).  As for CodeWarrior, I trust there is a legitimate reason
(after all, it is probably more of a pain for Metrowerk to do it that
way than to release a single generic Linux version) -- but I sure
can't fathom what it might be.
      Regardless, such specificity is a bit disconcerting.  If we are
indeed moving in that direction, we're probably playing into M$'s FUD
machine.
      I'll be grateful if someone tells me I'm overreacting or
misreading the (so-far) sparse evidence of bad trend.


2. hardware lookup?

3. -R$ORIGIN and -z origin

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