On Sun, 6 Jun 1999, Russell King - ARM Linux Admin wrote:
> Simon Kilvington writes:
> > I found out the problem - it bombs out when it tries to do
> > any FP stuff. My A5000 has a FP chip in it, so do I still need to use
> > the fpem module? If so, do I just modprobe it in my start up script?
> > or is it more complicated than that?
>
> I've never had a FP chip to try. I'd suggest disabling it under RISC OS
> (possibly by rmkilling the fpe module before booting linux) and loading
> the normal FP.
I could well be wrong here, but IIRC the actual FP chip doesn't implement
everything that the FP coprocessor is defined to - i.e. some functions
aren't actually implemented in silicon, they still need some emulation
in the FPEmulator module in RISC OS. If I'm right about that, presumably
you'd need to install the fpem module in linux as usual, but the
instructions which *are* in the silicon wouldn't generate traps and would
be executed by the FPU?
Apologies to all if I'm talking nonsense. :)
--
James Craig <[EMAIL PROTECTED]>
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