Re: IRQ on M68K

[Scott Howard <scott@objsw.com>]

Gnu CC does not support direct coding of interrupt routines.  You need
to write a standard C function to do the work.  You then must write a
small assembly language function which is pointed to by the interrupt
vector, which calls the C function and then executes the 'RTE'
instruction to return from the interrupt.

Dony wrote:

> Hii,
> I remember, there was once discussion about topic IRQ in M68K,
> but at that time the case was calling IRQ routine in C from
> assembler code. On my case I need to call IRQ routine in C from
> C main program. I add an "interrupt" attribute to function
> typing, but GCC doesn't recognize such kind of syntax.
> Can anybody share with me how to do that??
>
> --
> Dony
> Email : dony@willowglen.com.sg
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