Hi...I use arm-none-eabi-gcc. I took arm7 lpc23xx port for gcc as base. Then I compared assembler parts whith iar at91sam9xe port. They are the same. Now, my LPC use only one interrupt - TIMER0_MATCH. All other are disabled. So I installed the vPortTick function as ARM IRQ  handler. Then I installed vPortYieldProcessor function as SWI handler.

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