static void
PopSequenceAddr( struct sequence *pSequence )
{
if( pSequence->stackSize )
{
pSequence->addr = pSequence->stackData[--pSequence->stackSize];
}
else
{
data16_t *pStatus = GetSequenceStatusAddr(pSequence);
*pStatus &= 0xff7f; /* wipe "sequence-is-playing" flag */
}
} /* PopSequenceAddr */
static void
PopSequenceAddr(struct namcona *chip, struct sequence *pSequence )
{
if( pSequence->stackSize )
{
pSequence->addr = pSequence->stackData[--pSequence->stackSize];
}
else
{
UINT16 *pStatus = GetSequenceStatusAddr(chip,pSequence);
*pStatus &= 0xff7f; /* wipe "sequence-is-playing" flag */
}
} /* PopSequenceAddr */
static void
Silence( void )
{
int i;
for( i=0; i<MAX_VOICE; i++ )
{
mVoice[i].bActive = 0;
}
for( i=0; i<MAX_SEQUENCE; i++ )
{
data16_t *pStatus = GetSequenceStatusAddr(&mSequence[i]);
*pStatus &= 0xff7f; /* wipe "sequence-is-playing" flag */
}
}
static void
UpdateSequence(struct namcona *chip, struct sequence *pSequence )
{
UINT16 *pStatus = GetSequenceStatusAddr(chip,pSequence);
UINT16 data = *pStatus;
if( data&0x0040 )
{ /* bit 0x0040 indicates that a sound request was written by the main CPU */
int offs = ReadMetaDataWord(chip,0)+(data>>8)*2;
memset( pSequence, 0x00, sizeof(struct sequence) );
if( pSequence == &chip->mSequence[0] ) Silence(chip); /* hack! */
pSequence->addr = ReadMetaDataWord(chip,offs);
*pStatus = (data&0xffbf)|0x0080; /* set "sequence-is-playing" flag */
}
static void
Silence( struct namcona *chip )
{
int i;
for( i=0; i<MAX_SEQUENCE_VOICE; i++ )
{
chip->mVoice[i].bActive = 0;
}
for( i=0; i<MAX_SEQUENCE; i++ )
{
UINT16 *pStatus = GetSequenceStatusAddr(chip, &chip->mSequence[i]);
*pStatus &= 0xff7f; /* wipe "sequence-is-playing" flag */
}
}
