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// license:BSD-3-Clause
// copyright-holders:R. Belmont
/*********************************************************************
a2mcms.h
Implementation of the Mountain Computer Music System.
This was sold standalone and also used as part of the alphaSyntauri
and SoundChaser systems.
*********************************************************************/
#ifndef MAME_BUS_A2BUS_A2MCMS_H
#define MAME_BUS_A2BUS_A2MCMS_H
#include "a2bus.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
class a2bus_mcms1_device;
class mcms_device : public device_t, public device_sound_interface
{
public:
// construction/destruction
mcms_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
void voiceregs_w(offs_t offset, uint8_t data);
void control_w(offs_t offset, uint8_t data);
uint8_t get_pen_rand(void) { m_stream->update(); return m_rand; }
void set_bus_device(a2bus_mcms1_device *pDev) { m_pBusDevice = pDev; }
auto irq_cb() { return m_write_irq.bind(); }
devcb_write_line m_write_irq;
protected:
// device-level overrides
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 void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override;
private:
sound_stream *m_stream;
emu_timer *m_timer, *m_clrtimer;
a2bus_mcms1_device *m_pBusDevice;
bool m_enabled;
uint8_t m_vols[16];
uint8_t m_table[16];
uint16_t m_freq[16];
uint16_t m_acc[16];
uint8_t m_mastervol;
uint8_t m_rand;
};
// card 1
class a2bus_mcms1_device:
public device_t,
public device_a2bus_card_interface
{
public:
// construction/destruction
a2bus_mcms1_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// comms from card 2 (oscillator parameter writes)
mcms_device *get_engine(void);
required_device<mcms_device> m_mcms;
protected:
a2bus_mcms1_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_add_mconfig(machine_config &config) override;
// overrides of standard a2bus slot functions
virtual uint8_t read_c0nx(uint8_t offset) override;
virtual uint8_t read_cnxx(uint8_t offset) override;
virtual void write_cnxx(uint8_t offset, uint8_t data) override;
virtual bool take_c800() override { return false; }
private:
DECLARE_WRITE_LINE_MEMBER(irq_w);
};
// card 2
class a2bus_mcms2_device:
public device_t,
public device_a2bus_card_interface
{
public:
// construction/destruction
a2bus_mcms2_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
protected:
a2bus_mcms2_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
virtual void device_start() override;
virtual void device_reset() override;
// overrides of standard a2bus slot functions
virtual uint8_t read_c0nx(uint8_t offset) override;
virtual void write_c0nx(uint8_t offset, uint8_t data) override;
virtual void write_cnxx(uint8_t offset, uint8_t data) override;
virtual bool take_c800() override { return false; }
private:
a2bus_mcms1_device *m_card1; // card 1 for passthrough
mcms_device *m_engine;
};
// device type definition
DECLARE_DEVICE_TYPE(A2BUS_MCMS1, a2bus_mcms1_device)
DECLARE_DEVICE_TYPE(A2BUS_MCMS2, a2bus_mcms2_device)
#endif // MAME_BUS_A2BUS_A2MCMS_H
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