static DEVICE_START( exidy440_sound )
{
running_machine *machine = device->machine;
int i, length;
/* reset the system */
exidy440_sound_command = 0;
exidy440_sound_command_ack = 1;
state_save_register_global(machine, exidy440_sound_command);
state_save_register_global(machine, exidy440_sound_command_ack);
/* reset the 6844 */
for (i = 0; i < 4; i++)
{
m6844_channel[i].active = 0;
m6844_channel[i].control = 0x00;
}
m6844_priority = 0x00;
m6844_interrupt = 0x00;
m6844_chain = 0x00;
state_save_register_global(machine, m6844_priority);
state_save_register_global(machine, m6844_interrupt);
state_save_register_global(machine, m6844_chain);
channel_frequency[0] = device->clock; /* channels 0 and 1 are run by FCLK */
channel_frequency[1] = device->clock;
channel_frequency[2] = device->clock/2; /* channels 2 and 3 are run by SCLK */
channel_frequency[3] = device->clock/2;
/* get stream channels */
stream = stream_create(device, 0, 2, device->clock, NULL, channel_update);
/* allocate the sample cache */
length = memory_region_length(machine, "cvsd") * 16 + MAX_CACHE_ENTRIES * sizeof(sound_cache_entry);
sound_cache = (sound_cache_entry *)auto_alloc_array(machine, UINT8, length);
/* determine the hard end of the cache and reset */
sound_cache_max = (sound_cache_entry *)((UINT8 *)sound_cache + length);
reset_sound_cache();
/* allocate the mixer buffer */
mixer_buffer_left = auto_alloc_array(machine, INT32, 2 * device->clock);
mixer_buffer_right = mixer_buffer_left + device->clock;
if (SOUND_LOG)
debuglog = fopen("sound.log", "w");
}
void exidy440_sound_device::device_start()
{
int i, length;
/* reset the system */
m_sound_command = 0;
m_sound_command_ack = 1;
save_item(NAME(m_sound_command));
save_item(NAME(m_sound_command_ack));
/* reset the 6844 */
for (i = 0; i < 4; i++)
{
m_m6844_channel[i].active = 0;
m_m6844_channel[i].control = 0x00;
}
m_m6844_priority = 0x00;
m_m6844_interrupt = 0x00;
m_m6844_chain = 0x00;
save_item(NAME(m_m6844_priority));
save_item(NAME(m_m6844_interrupt));
save_item(NAME(m_m6844_chain));
m_channel_frequency[0] = clock(); /* channels 0 and 1 are run by FCLK */
m_channel_frequency[1] = clock();
m_channel_frequency[2] = clock()/2; /* channels 2 and 3 are run by SCLK */
m_channel_frequency[3] = clock()/2;
/* get stream channels */
m_stream = machine().sound().stream_alloc(*this, 0, 2, clock());
/* allocate the sample cache */
length = machine().root_device().memregion("cvsd")->bytes() * 16 + MAX_CACHE_ENTRIES * sizeof(sound_cache_entry);
m_sound_cache = (sound_cache_entry *)auto_alloc_array_clear(machine(), UINT8, length);
/* determine the hard end of the cache and reset */
m_sound_cache_max = (sound_cache_entry *)((UINT8 *)m_sound_cache + length);
reset_sound_cache();
/* allocate the mixer buffer */
m_mixer_buffer_left = make_unique_clear<INT32[]>(clock());
m_mixer_buffer_right = make_unique_clear<INT32[]>(clock());
if (SOUND_LOG)
m_debuglog = fopen("sound.log", "w");
}
