static void onRecv(YM2148* midi, UInt32 time)
{
midi->timeRecv = 0;
if (midi->status & STAT_RXRDY) {
midi->status |= STAT_OE;
if (midi->command & CMD_RSTER) {
ym2148Reset(midi);
return;
}
}
if (midi->rxPending != 0) {
archSemaphoreWait(midi->semaphore, -1);
midi->rxData = midi->rxQueue[(midi->rxHead - midi->rxPending) & (RX_QUEUE_SIZE - 1)];
midi->rxPending--;
archSemaphoreSignal(midi->semaphore);
midi->status |= STAT_RXRDY;
if (midi->command & CMD_RDINT) {
boardSetDataBus(midi->vector, 0, 0);
boardSetInt(0x800);
midi->status |= ST_INT;
}
}
midi->timeRecv = boardSystemTime() + midi->charTime;
boardTimerAdd(midi->timerRecv, midi->timeRecv);
}
static void ym2148WriteCommand(YM2148* midi, UInt8 value)
{
midi->command = value;
if (value & 0x02) {
}
if (value & CMD_RST) {
ym2148Reset(midi);
}
midi->charTime = (UInt32)((UInt64)144 * boardFrequency() / 500000);
}
static YM2148* ym2148Create()
{
YM2148* midi = (YM2148*)calloc(1, sizeof(YM2148));
midi->midiIo = midiIoCreate(midiInCallback, midi);
midi->semaphore = archSemaphoreCreate(1);
midi->timerRecv = boardTimerCreate(onRecv, midi);
midi->timerTrans = boardTimerCreate(onTrans, midi);
ym2148Reset(midi);
return midi;
}
static void ym2148WriteCommand(YM2148* midi, UInt8 value)
{
UInt8 oldValue = midi->command;
midi->command = value;
if (value & CMD_RST) {
ym2148Reset(midi);
return;
}
if (value & CMD_TXINT) {
if ((midi->status & STAT_TXEMPTY) && (value & CMD_TXEN)) {
if (midi->command & CMD_TXINT) {
boardSetDataBus(midi->vector, 0, 0);
boardSetInt(0x800);
midi->status |= ST_INT;
}
}
}
}
static void reset(RomMapperNet* rm)
{
ym2151Reset(rm->ym2151);
ym2148Reset(rm->ym2148);
rm->kbdLatch = 0;
}
