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// 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<ym2203_device *>(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 const * const *inputs, stream_sample_t * const *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<ym2203_device *>(param)->irq_handler(irq); }
static void static_timer_handler(device_t *param, int c, int count, int clock) { downcast<ym2203_device *>(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
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