This is actually quite interesting and goes to show that not all is clear
about what RTAI is (no offence to Ivan, I'm just raising concerns).
As others will fast point out, RTAI is an RT extension to Linux on it's own.
It has very little to do with RTL in it's current form and doesn't have
a pretence to it, in any case, even though it might have started from the
same source.
Therefore, RTAI features are RTAI features and RTL features are RTL features,
no effort is made to "be compatible". Exception made of different independant
projects who make an effort to be compatible with both (comedi is an example
to this).
In other words, your first assumption is wrong: RTAI is __NOT__ a compatible
extension to RTL with extra features.
Hope this clear things a little for you (Ivan) and other readers out there.
Karim
Ivan Martinez wrote:
>
> Hello all:
> I'm comparing RTAI to RTLinux and I just want to make you a couple of
> questions. Please don't start fighting about which sytems is best!. It's
> not about that.
> I understood RTAI is a compatible extension of RTLinux with extra
> features, right?. Is the extension made from every RTLinux version or
> it's a different project-branch now?.
> If it's an extension, how is compatibility kept?. Let's say RTLinux
> guys decide to implement their own semaphores after RTAI. Because of
> being the original project, they don't care about how things are already
> implemented in RTAI, do they?. What happens then in RTAI?. Does it keep
> both its original implementation and the new RTLinux one?.
> Thank you, and please stay as friends ;-)
> --
> Ivan Martinez (Rodriguez)
> Bch in Software Engineering - MSc student
> http://www.geocities.com/ivan_m_r2/
> "Got fabes?"
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--
===================================================
Karim Yaghmour
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Operating System Consultant
(Linux kernel, real-time and distributed systems)
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