user define interrupt

Hello,

I'm using a lpc2378 with the Realview compiler.
In my application I want a interrupt to be triggered by software. This interrupt is being handled the same as all other irq's but then with the lowest priority.

Is there some free/ user definable irq vector which can be used? Or should I use SWI vector? (haven't got any experience with that)

any suggestions?

Kind regards,
Sander Wiggers

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