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// license:BSD-3-Clause
// copyright-holders:Hiromitsu Shioya, Olivier Galibert
/*********************************************************/
/* SEGA 8bit PCM */
/*********************************************************/
#ifndef MAME_SOUND_SEGAPCM_H
#define MAME_SOUND_SEGAPCM_H
#pragma once
#include "dirom.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
class segapcm_device : public device_t,
public device_sound_interface,
public device_rom_interface<21>
{
public:
static constexpr int BANK_256 = 11;
static constexpr int BANK_512 = 12;
static constexpr int BANK_12M = 13;
static constexpr int BANK_MASK7 = 0x70 << 16;
static constexpr int BANK_MASKF = 0xf0 << 16;
static constexpr int BANK_MASKF8 = 0xf8 << 16;
segapcm_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// configuration
void set_bank(int bank) { m_bankshift = (bank & 0xf); m_bankmask = (0x70|((bank >> 16) & 0xfc)); }
void write(offs_t offset, uint8_t data);
uint8_t read(offs_t offset);
protected:
// device-level overrides
virtual void device_start() override ATTR_COLD;
virtual void device_clock_changed() override;
// sound stream update overrides
virtual void sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) override;
// device_rom_interface overrides
virtual void rom_bank_pre_change() override;
private:
std::unique_ptr<uint8_t[]> m_ram;
uint8_t m_low[16];
int m_bankshift;
int m_bankmask;
sound_stream* m_stream;
};
DECLARE_DEVICE_TYPE(SEGAPCM, segapcm_device)
#endif // MAME_SOUND_SEGAPCM_H
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