The alpha has abysmal timing. I wouldn't recommend it unless you really do
need an alpha for some other part of the design.
The 8260 PowerPC seems to be amazing in terms of timing accuracy. Other
PowerPC are excellent. The G4's get a worst case of 16us because of a
problem with the IDE controller that's shipped with them. If you take the
IDE controller out of the loop, or move to another PowerPC platform, you
can expect to see far better timing than the other platforms.
} I am in the process of building our next generation remote sensing system.
} We currently use an x86 based computer as the main processor. As far as
} real time is concerned, is there a superior platform to the x86? I know
} there are a lot of other concerns with this such as peripheral hardware but
} as far as the core of rtlinux is concerned, is there a better platform that
} provides a smaller resolution and more precise timing? I've heard from time
} to time on the list references to alternative hardware bases (such as the
} alpha) having better timer resolution, etc. I'm happy to hear everyone's
} opinions on this topic.
}
} Troy Davis
} Airborne Data Systems, Inc.
}
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