Lpc2000

The Keil CA Compiler implements the keywords __irq and __fiq. With the __fiq keyword the compiler does not save the CPU registers R8 - R12, since the ARM CPU implements separate registers in the FIQ mode.

  This is what the keil help says. Above that I do not know anything more than the obvious fact that __irq tells the function that it is an irq interrupt. Then you may ask what is the use of the register VICIntSelect. I too dont know the answer for that. Anyways, hope my effort was of any help.
   
  Regards,
  Jack.
heedaf <ruffellfamily@...> wrote:
  I have a newbie question.  In the following code

    void ADC0Handler (void) __irq

What does __irq do?  I've never seen this before.  It comes from the 
Kiel ADC sample listed Philips website.
Thanks,
Dewayne





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