void cdp1864_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples)
{
// reset the output stream
memset(outputs[0], 0, samples * sizeof(*outputs[0]));
INT16 signal = m_signal;
stream_sample_t *buffer = outputs[0];
memset( buffer, 0, samples * sizeof(*buffer) );
if (m_aoe)
{
double frequency = unscaled_clock() / 8 / 4 / (m_latch + 1) / 2;
int rate = machine().sample_rate() / 2;
/* get progress through wave */
int incr = m_incr;
if (signal < 0)
{
signal = -0x7fff;
}
else
{
signal = 0x7fff;
}
while( samples-- > 0 )
{
*buffer++ = signal;
incr -= frequency;
while( incr < 0 )
{
incr += rate;
signal = -signal;
}
}
/* store progress through wave */
m_incr = incr;
m_signal = signal;
}
}
void m58846_device::reset_timer()
{
attotime base = attotime::from_ticks(6, unscaled_clock());
m_timer->adjust(base);
}
