Hi,
> Are there other people with similar projects somewhere in the world?
> (There have to be!)
I'm working with m68k cpus, but I don't know about the differences to
the Coldfire.
> Do you think that this can be done by one programmer in a reasonable time
> (1 Month)?
Theoretically, yes :-). You also want drivers, a bootloader and all this
tested of course, so a month can be quite tight.
Anyway, a nice thing of the m68k architecture are the interrupt priorities
so you can get a basic realtime scheduler for free, what saved me some
time.
> Do you think that implementing RealTimeLinux on the ColdFire is merely a
> simple port or has the whole thing to be rewritten? (Time estimate?)
If you don't need the realtime scheduler, you only need the the sti()/cli()
emulation stuff and the communnication stuff between realtime code/linux.
As I don't know how different the Coldfire is, I don't know what instructions
did change or are missing (I'm most curious about the cas instruction),
but I can give you some stuff, that should help you.
The problem with the m68k rt port is, that it most important part - the
realtime interrupts - must be ported to every machine to get the best
results, as there is no generic interrupt controller, if you need more
advanced interrupt tricks.
bye, Roman
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For more information on Real-Time Linux see:
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