Function SIInterruptHandler

src/dolphin/src/si/SIBios.c:167–245

}

static void SIInterruptHandler(__OSInterrupt interrupt, OSContext* context)
{
    u32 reg;

    reg = __SIRegs[13];

    if ((reg & 0xc0000000) == 0xc0000000)
    {
        s32 chan;
        u32 sr;
        SICallback callback;

        chan = Si.chan;
        sr = CompleteTransfer();
        callback = Si.callback;
        Si.callback = 0;

        SITransferNext(chan);

        if (callback)
        {
            callback(chan, sr, context);
        }

        sr = __SIRegs[14];
        sr &= 0xf000000 >> (8 * chan);
        __SIRegs[14] = sr;

        if (Type[chan] == SI_ERROR_BUSY && !SIIsChanBusy(chan))
        {
            static u32 cmdTypeAndStatus = 0 << 24;
            SITransfer(chan, &cmdTypeAndStatus, 1, &Type[chan], 3, GetTypeCallback,
                       OSMicrosecondsToTicks(65));
        }
    }

    if ((reg & 0x18000000) == 0x18000000)
    {
        int i;
        u32 vcount;
        u32 x;

        vcount = VIGetCurrentLine() + 1;
        x = (Si.poll & 0x03ff0000) >> 16;

        for (i = 0; i < SI_MAX_CHAN; ++i)
        {
            if (SIGetResponseRaw(i))
            {
                InputBufferVcount[i] = vcount;
            }
        }

        for (i = 0; i < SI_MAX_CHAN; ++i)
        {
            if (!(Si.poll & (SI_CHAN0_BIT >> (31 - 7 + i))))
            {
                continue;