// license:BSD-3-Clause // copyright-holders:Ernesto Corvi #ifndef MAME_SOUND_2203INTF_H #define MAME_SOUND_2203INTF_H #pragma once #include "ay8910.h" struct ssg_callbacks; class ym2203_device : public ay8910_device { public: ym2203_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); // configuration helpers auto irq_handler() { return m_irq_handler.bind(); } u8 read(offs_t offset); void write(offs_t offset, u8 data); u8 status_port_r(); u8 read_port_r(); void control_port_w(u8 data); void write_port_w(u8 data); // update request from fm.cpp static void update_request(device_t *param) { downcast(param)->update_request(); } protected: // device-level overrides virtual void device_start() override; virtual void device_post_load() override; virtual void device_stop() override; virtual void device_reset() override; virtual void device_clock_changed() override; virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override; void stream_generate(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples); private: enum { TIMER_A, TIMER_B, TIMER_IRQ_SYNC }; void irq_handler(int irq); void timer_handler(int c, int count, int clock); void update_request() { m_stream->update(); } void calculate_rates(); static void static_irq_handler(device_t *param, int irq) { downcast(param)->irq_handler(irq); } static void static_timer_handler(device_t *param, int c, int count, int clock) { downcast(param)->timer_handler(c, count, clock); } // internal state sound_stream * m_stream; emu_timer * m_timer[3]; void * m_chip; devcb_write_line m_irq_handler; static const ssg_callbacks psgintf; }; DECLARE_DEVICE_TYPE(YM2203, ym2203_device) #endif // MAME_SOUND_2203INTF_H