Lpc2000

Apart from the VIC handler, you shouldn't have a pressing need to
change the vector table, they're all weak symbols, so you just need to
define
a handler with the same name to override, doesn't affect your table.

Eg : An swi_handler :

# ifdef    EXCEPTIONS
void swi_handler (void )
{
// do your own thing
}
#endif


the address of your swi_handler function will override
in the linker, so you don't need to change the vector table for that.

-- Kris




----- Original Message -----
From: "Robert Wood" <robert.wood@...>
To: <lpc2000@yahoogroups.com>
Sent: Sunday, November 07, 2004 11:51 PM
Subject: Re: [lpc2000] Interrupt Handling


> >> 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!
>
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