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// license:LGPL-2.1+
// copyright-holders:Angelo Salese
/***************************************************************************
Nichibutsu 1412M2 device emulation
***************************************************************************/
#ifndef MAME_MACHINE_NB1412M2_H
#define MAME_MACHINE_NB1412M2_H
#pragma once
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> nb1412m2_device
class nb1412m2_device : public device_t, public device_memory_interface
{
public:
// construction/destruction
nb1412m2_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// I/O operations
void command_w(uint8_t data);
void data_w(uint8_t data);
uint8_t data_r();
auto dac_callback() { return m_dac_cb.bind(); }
void nb1412m2_map(address_map &map);
protected:
// device-level overrides
// virtual void device_validity_check(validity_checker &valid) const override;
// virtual void device_add_mconfig(machine_config &config) override;
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
virtual space_config_vector memory_space_config() const override;
private:
uint8_t m_command;
uint16_t m_rom_address;
uint16_t m_adj_address;
uint16_t m_dac_start_address, m_dac_current_address;
double m_dac_frequency;
uint8_t m_timer_rate;
uint8_t m_rom_op;
uint8_t m_const90;
bool m_timer_reg;
bool m_dac_playback;
const address_space_config m_space_config;
emu_timer *m_timer;
emu_timer *m_dac_timer;
required_region_ptr<uint8_t> m_data;
devcb_write8 m_dac_cb;
static const device_timer_id TIMER_MAIN = 1;
static const device_timer_id TIMER_DAC = 2;
void rom_address_w(offs_t offset, uint8_t data);
uint8_t rom_decrypt_r();
void rom_op_w(uint8_t data);
void rom_adjust_w(offs_t offset, uint8_t data);
uint8_t timer_r();
void timer_w(uint8_t data);
void timer_ack_w(uint8_t data);
uint8_t const90_r();
void const90_w(uint8_t data);
void dac_address_w(offs_t offset, uint8_t data);
void dac_control_w(uint8_t data);
void dac_timer_w(uint8_t data);
};
// device type definition
DECLARE_DEVICE_TYPE(NB1412M2, nb1412m2_device)
//**************************************************************************
// GLOBAL VARIABLES
//**************************************************************************
#endif // MAME_MACHINE_NB1412M2_H
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