INPUT_PORTS_END
WRITE8_MEMBER(polyplay_state::polyplay_sound_channel)
{
switch(offset) {
case 0x00:
if (m_channel1_const) {
if (data <= 1) {
polyplay_set_channel1(machine(), 0);
}
m_channel1_const = 0;
polyplay_play_channel1(machine(), data*m_prescale1);
}
else {
m_prescale1 = (data & 0x20) ? 16 : 1;
if (data & 0x04) {
polyplay_set_channel1(machine(), 1);
m_channel1_const = 1;
}
if ((data == 0x41) || (data == 0x65) || (data == 0x45)) {
polyplay_set_channel1(machine(), 0);
polyplay_play_channel1(machine(), 0);
}
}
break;
case 0x01:
if (m_channel2_const) {
if (data <= 1) {
polyplay_set_channel2(machine(), 0);
}
m_channel2_const = 0;
polyplay_play_channel2(machine(), data*m_prescale2);
}
else {
m_prescale2 = (data & 0x20) ? 16 : 1;
if (data & 0x04) {
polyplay_set_channel2(machine(), 1);
m_channel2_const = 1;
}
if ((data == 0x41) || (data == 0x65) || (data == 0x45)) {
polyplay_set_channel2(machine(), 0);
polyplay_play_channel2(machine(), 0);
}
}
break;
}
}
INPUT_PORTS_END
static WRITE8_HANDLER( polyplay_sound_channel )
{
switch(offset) {
case 0x00:
if (channel1_const) {
if (data <= 1) {
polyplay_set_channel1(0);
}
channel1_const = 0;
polyplay_play_channel1(data*prescale1);
}
else {
prescale1 = (data & 0x20) ? 16 : 1;
if (data & 0x04) {
polyplay_set_channel1(1);
channel1_const = 1;
}
if ((data == 0x41) || (data == 0x65) || (data == 0x45)) {
polyplay_set_channel1(0);
polyplay_play_channel1(0);
}
}
break;
case 0x01:
if (channel2_const) {
if (data <= 1) {
polyplay_set_channel2(0);
}
channel2_const = 0;
polyplay_play_channel2(data*prescale2);
}
else {
prescale2 = (data & 0x20) ? 16 : 1;
if (data & 0x04) {
polyplay_set_channel2(1);
channel2_const = 1;
}
if ((data == 0x41) || (data == 0x65) || (data == 0x45)) {
polyplay_set_channel2(0);
polyplay_play_channel2(0);
}
}
break;
}
}
void polyplay_state::machine_reset()
{
m_channel1_active = 0;
m_channel1_const = 0;
m_channel2_active = 0;
m_channel2_const = 0;
polyplay_set_channel1(machine(), 0);
polyplay_play_channel1(machine(), 0);
polyplay_set_channel2(machine(), 0);
polyplay_play_channel2(machine(), 0);
m_timer = machine().device<timer_device>("timer");
}
static MACHINE_RESET( polyplay )
{
channel1_active = 0;
channel1_const = 0;
channel2_active = 0;
channel2_const = 0;
polyplay_set_channel1(0);
polyplay_play_channel1(0);
polyplay_set_channel2(0);
polyplay_play_channel2(0);
polyplay_timer = timer_alloc(polyplay_timer_callback, NULL);
}
static MACHINE_RESET( polyplay )
{
polyplay_state *state = machine.driver_data<polyplay_state>();
state->m_channel1_active = 0;
state->m_channel1_const = 0;
state->m_channel2_active = 0;
state->m_channel2_const = 0;
polyplay_set_channel1(machine, 0);
polyplay_play_channel1(machine, 0);
polyplay_set_channel2(machine, 0);
polyplay_play_channel2(machine, 0);
state->m_timer = machine.device<timer_device>("timer");
}