static void audio_state_channel2 (int nr, bool perfin)
{
struct audio_channel_data *cdp = audio_channel + nr;
bool chan_ena = (dmacon & DMA_MASTER) && (dmacon & (1 << nr));
bool old_dma = cdp->dmaenstore;
int audav = adkcon & (0x01 << nr);
int audap = adkcon & (0x10 << nr);
int napnav = (!audav && !audap) || audav;
int hpos = current_hpos ();
cdp->dmaenstore = chan_ena;
if (currprefs.produce_sound == 0) {
zerostate (cdp);
return;
}
audio_activate ();
if ((cdp->state == 2 || cdp->state == 3) && usehacks1 () && !chan_ena && old_dma) {
// DMA switched off, state=2/3 and "too fast CPU": kill DMA instantly
// or CPU timed DMA wait routines in common tracker players will lose notes
newsample (cdp, (cdp->dat2 >> 0) & 0xff);
if (napnav)
setirq (nr);
zerostate (cdp);
return;
}
void audio_switch_deactivate(void) {
if (audio_deactivated) {
audio_activate();
} else {
audio_deactivate();
}
}
static void sndboard_vsync_toccata(void)
{
struct toccata_data *data = &toccata;
if (data->toccata_active) {
calculate_volume_toccata();
audio_activate();
}
}
