// license:BSD-3-Clause // copyright-holders:Ernesto Corvi /**************************************************************** MAME / MESS functions ****************************************************************/ #include "emu.h" #include "ym2413.h" #include "2413intf.h" static void ym2413_update_request(void *param, int interval) { ym2413_device *ym2413 = (ym2413_device *) param; ym2413->_ym2413_update_request(); } void ym2413_device::_ym2413_update_request() { m_stream->update(); } //------------------------------------------------- // sound_stream_update - handle a stream update //------------------------------------------------- void ym2413_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) { ym2413_update_one(m_chip, outputs, samples); } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void ym2413_device::device_start() { int rate = clock()/72; /* emulator create */ m_chip = ym2413_init(this, clock(), rate); assert_always(m_chip != nullptr, "Error creating YM2413 chip"); /* stream system initialize */ m_stream = machine().sound().stream_alloc(*this,0,2,rate); ym2413_set_update_handler(m_chip, ym2413_update_request, this); } //------------------------------------------------- // device_stop - device-specific stop //------------------------------------------------- void ym2413_device::device_stop() { ym2413_shutdown(m_chip); } //------------------------------------------------- // device_reset - device-specific reset //------------------------------------------------- void ym2413_device::device_reset() { ym2413_reset_chip(m_chip); } WRITE8_MEMBER( ym2413_device::write ) { ym2413_write(m_chip, offset & 1, data); } WRITE8_MEMBER( ym2413_device::register_port_w ) { write(space, 0, data); } WRITE8_MEMBER( ym2413_device::data_port_w ) { write(space, 1, data); } const device_type YM2413 = &device_creator; ym2413_device::ym2413_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, YM2413, "YM2413", tag, owner, clock, "ym2413", __FILE__), device_sound_interface(mconfig, *this) { } //------------------------------------------------- // device_config_complete - perform any // operations now that the configuration is // complete //------------------------------------------------- void ym2413_device::device_config_complete() { }