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// license:BSD-3-Clause
// copyright-holders:Valley Bell
/* Sega 315-5641 / D77591 / 9442CA010 */
// this is the PICO sound chip, we are not sure if it's the same as a 7759 or not, it requires FIFO logic
// which the 7759 does _not_ have but it is possible that is handled somewhere else on the PICO hardware.
#ifndef MAME_SOUND_315_5641_H
#define MAME_SOUND_315_5641_H
#pragma once
#include "upd7759.h"
class sega_315_5641_pcm_device : public upd7759_device
{
public:
sega_315_5641_pcm_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock);
auto fifo_cb() { return m_fifocallback.bind(); }
virtual void port_w(u8 data) override;
void fifo_reset_w(u8 data);
uint8_t get_fifo_space();
protected:
// device-level overrides
virtual void internal_start_w(int state) override;
virtual void device_start() override;
virtual void device_reset() override;
virtual void advance_state() override;
devcb_write_line m_fifocallback;
uint8_t m_fifo_data[0x40];
uint8_t m_fifo_read; // last read offset (will read in m_fifo_read+1)
uint8_t m_fifo_write; // write offset
bool m_fifo_reset;
bool m_fifo_empty;
};
DECLARE_DEVICE_TYPE(SEGA_315_5641_PCM, sega_315_5641_pcm_device)
#endif // MAME_SOUND_315_5641_H
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