--- In "Breton M. Saunders"
> > Is this buggy FPU only in the 200MHz versions of the ARM9-based TS-boards,
> > or does it also affect the 250MHz and 500MHz?
> >
> >
> The problems we're speaking about here only affect the Cirrus ep93xx
> based boards. The ep93xx chip is perfectly stable with the FPU turned
> off. We built the alert me hub around an ep9302 - the ts7400 served as
> the development platform for it. The chip is rock solid, provided that
> one provides a proper reset fix (TS does this in their CPLD).
>
> As long as your application can be designed to work with fixed point
> (integer) arithmetic, then the TS ep9302 based boards are excellent, and
> a well tested solution.
>
> > Can I disable FPU usage all together in the kernel and/or clib so I'm
> > certain the FPU won't be used?
> >
> Yes. Default kernel configuration is this way. (I have never deployed
> a FP kernel on this chip. I have built one or two for testing though.)
> > I was initially interested in the TS-7260 but perhaps it's worth choosing
> > TS-7550 instead. Unfortunately it doesn't have any ADCs...
> >
> The Cavium chip is faster than the ep9302; I think its just a better
> tuned Arm 9 and memory subsystem. The Atmel one looks like the fastest
Careful here if you need FP. I understand EABI is impossible with the Cavium
chip, so FP performance would be better with EABI ep93xx than OABI Cavium. (I
think ... I don't have a TS-7550 to test, but it's something to be aware of).
Best TS option for now for FP would be TS-7800 EABI.
regards, .......... Charlie
> that TS sells at the moment. I don't think either of them have FPUs.
> The tradeoff sounds like either you building hardware A/D converters, or
> a slower CPU with the 7260.
>
> -Brett
>
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