[Freemint-list] Falcon + _FPU cookie

[Miro Kropáček]

>
> Hm ok, then it wont do false reports, but only based on the assumption that
> there is no SFP004 for cpu >= 68020.
>
Because 030+ doesn't use the peripheral mode anymore.

The CPU might be inaccessible, but the SFP is not.
>
On the contrary, see above.

Also the cookie was explictly designed and documented that both FPUs might
> be
> reported.
>
And they are -- I think you've misinterpreted the meaning of "SFP+6888x"
 -- the detection code asks (via the SFP) what kind of FPU is connected.
The answer is either 68881 or 68882. And since it's via the SFP, it's
marked as "SFP+68888x".

You simply can't have both 030+ style FPU and SFP FPU in the same time.

And i would be still be interested in the answer wether that address
> generates
> a bus-error or not. The startup code for almost all Pure-C compiled
> programs
> will check that address too, and this is definetely done without checking
> the
> CPU type first.
>
Well, that would require to see an application which does use the SFP in
the first place. There's a few of them but I'm not sure whether they had
been compiled by PureC.

-- 
MiKRO / Mystic Bytes
http://mikro.atari.org
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