module common.rp6502.interrupts;


enum
{
    VECTOR_NMI = 0xfffa,
    VECTOR_RES = 0xfffc,
    VECTOR_IRQ = 0xfffe
}

class Interrupts
{
    private bool irq;
    private bool nmi;
    private bool res;

    public bool available(bool i)
    {
        return nmi | (irq & !i) | res;
    }

    public ushort vector()
    {
        if (res) return VECTOR_RES;
        if (nmi) return VECTOR_NMI;
        if (irq) return VECTOR_IRQ;

        return 0;
    }
}