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Lpc2000

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Re: [lpc2000] Interrupt Handling

2004-11-07 by Robert Adsett

At 12:51 PM 11/7/04 +0000, you wrote:

> >> What toolchain are you using ? <<
>
>Crossworks.
>
> >> Depending on toolchain, I could send you the modfied startup file
>directly.. <<
>
>The datasheet says:
>
>"The reserved ARM interrupt vector location (0x0000 0014) should contain 
>the 2
>s complement of the check-sum of the remaining interrupt vectors. This causes
>the checksum of all of the vectors together to be 0."
>
>So, I'm thinking it shouldn't be that difficult to actually work out, but I'm
>don't understand whether it's just talking about the first few memory
>locations, all the interrupt vectors, both, or something else again.
>
>I should work out how to calculate it really, as there's every chance I'll
>want to mod it again!

That really shouldn't be necessary, the download tool should take care of 
that.  I've never modified it directly myself.

Robert

" 'Freedom' has no meaning of itself.  There are always restrictions,
be they legal, genetic, or physical.  If you don't believe me, try to
chew a radio signal. "

                         Kelvin Throop, III

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