Re: [cc65] interruptor from C?

I also read the FAQ and found out why the interrupt should be in asm.

But my C-code produces exactly the same thing I would write by hand
so I would prefer to have a way to write the routine in C for readability
reasons.

--- snip ----
char drawPending;
int metronome;
extern void swap_buffers(void);
void vbl(void)
{
    if (drawPending) {
        swap_buffers();
        drawPending = 0;
    }
    ++metronome;
}

--- produces ---

.proc   _vbl: near

.segment        "CODE"

        lda     _drawPending
        jeq     L0003
        jsr     _swap_buffers
        ldx     #$00
        lda     #$00
        sta     _drawPending
L0003:  inc     _metronome
        bne     L0009
        inc     _metronome+1
L0009:  lda     _metronome
        ldx     _metronome+1
        rts

The swap_buffers is also a trivial function written in asm.

-- snap ---

--
Regards,

Karri
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