Matt Shaver wrote:
> I'm actually very interested to see the Linux version of Mach. As far as
> I can tell, most of the criticism of Mach relates to it being hosted on
> Windows, and the timing related difficulties that can result.
>   
Hmmm, much of my criticism lately is the screenset thing.  It seems all 
anyone seems to
be talking about is creating screensets for Mach, rather than cutting 
parts.  Reminds me
about John Kleinbauer's rants about the "motor spinners".
> Once Mach is on Linux, it should be able to perform as well, or better
> than, Linuxcnc (EMC) give enough development time and effort. It will
> be interesting to see the differences between the two programs once the
> platform differences are removed.
>   
Well, LinuxCNC is a VERY well-constructed system, benefiting from layers of
software provided even from outside the package, such as RTAI.  I can't 
say for
the work that Brian barker has done, but I was allowed to see the code 
of the
driver that Art Fenerty created.  AWK -GAACK!  I sure HOPE Brian has done
better with it.  Certainly Art had a good idea for doing step timing 
that transcended
the periodic interrupt granularity, but that is the only thing I know 
that is really
good about Mach.
> P.S. I did offer to be the first Linux guinea pig for Mach4/Linux, so I
> look forward to a side-by-side comparison.
>   
Well, I have some doubts it will even happen.  How are they going to 
deal with
the RT situation, or will it require a hardware step generator with 
buffering?
Who is going to do the development?  If one has been steeped in the Windows
world for years, Linux will be a strange environment to get used to and take
some time to get productive.  And, for Apple, they will have to convince the
Apple gods that they are WORTHY of providing software for them.

Jon

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