how to utilize interrupts in arm9 processors..? what is residing inside ISR..?

Thanks for your reply.

Just to be clear, the __irq keyword will indeed cause the compiler to output object code which can be installed as an IRQ handler (it will modify the rules for saving/restoring registers and change the return address, for instance) but it will not install the function in the vector table. You still need to do that yourself...

Chris

Thanks for your reply.

Just to be clear, the __irq keyword will indeed cause the compiler to output object code which can be installed as an IRQ handler (it will modify the rules for saving/restoring registers and change the return address, for instance) but it will not install the function in the vector table. You still need to do that yourself...

Chris