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CT60 and related things BBS
| Re: Some CT60 fixes |
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Posted by: NervE
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Feb,12.2004-14:30
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Just a thought... Maybe you can shed some light on this Didier?
On 060, quite a few FPU-instructions are unimplemented (but software emulated). One of the unimplemented functions is the FMovem - which i guess Evl is using for storing/fetching fp0-7 to stack. In a typical interrupt handler, atleast i prefer to mask out all other interrupts so that nothing "disturbs" my interrupt. If this was the case, and the Line F interrupt was masked out, wouldnt it take the Line F exception sometime _after_ the original interrupt is finished? Which would cause fp0-7 not to be stored before changed?
If i am totally wrong, i hope you can explain this to me :) Just getting my first proper FPU-code working here :)
-Kåre
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