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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
Intelligent Designs DAVE emulation
**********************************************************************/
#ifndef MAME_SOUND_DAVE_H
#define MAME_SOUND_DAVE_H
#pragma once
///*************************************************************************
// TYPE DEFINITIONS
///*************************************************************************
// ======================> dave_device
class dave_device : public device_t,
public device_memory_interface,
public device_sound_interface
{
public:
dave_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
auto irq_wr() { return m_write_irq.bind(); }
auto lh_wr() { return m_write_lh.bind(); }
auto rh_wr() { return m_write_rh.bind(); }
virtual void z80_program_map(address_map &map) ATTR_COLD;
virtual void z80_io_map(address_map &map) ATTR_COLD;
void int1_w(int state);
void int2_w(int state);
void io_map(address_map &map) ATTR_COLD;
void program_map(address_map &map) ATTR_COLD;
protected:
// device-level overrides
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
// device_memory_interface overrides
virtual space_config_vector memory_space_config() const 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;
TIMER_CALLBACK_MEMBER(update_1hz_timer);
TIMER_CALLBACK_MEMBER(update_50hz_timer);
uint8_t program_r(offs_t offset);
void program_w(offs_t offset, uint8_t data);
uint8_t io_r(offs_t offset);
void io_w(offs_t offset, uint8_t data);
private:
enum
{
IRQ_50HZ_DIVIDER = 0x01,
IRQ_50HZ_LATCH = 0x02,
IRQ_1HZ_DIVIDER = 0x04,
IRQ_1HZ_LATCH = 0x08,
IRQ_INT1 = 0x10,
IRQ_INT1_LATCH = 0x20,
IRQ_INT2 = 0x40,
IRQ_INT2_LATCH = 0x80,
IRQ_LATCH = IRQ_INT2_LATCH | IRQ_INT1_LATCH | IRQ_1HZ_LATCH | IRQ_50HZ_LATCH
};
void update_interrupt();
const address_space_config m_program_space_config;
const address_space_config m_io_space_config;
devcb_write_line m_write_irq;
devcb_write8 m_write_lh;
devcb_write8 m_write_rh;
uint8_t m_segment[4];
uint8_t m_irq_status;
uint8_t m_irq_enable;
emu_timer *m_timer_1hz;
emu_timer *m_timer_50hz;
/* SOUND SYNTHESIS */
uint8_t m_regs[32];
int m_period[4];
int m_count[4];
int m_level[4];
/* these are used to force channels on/off */
/* if one of the or values is 0x0ff, this means
the volume will be forced on,else it is dependant on
the state of the wave */
int m_level_or[8];
/* if one of the values is 0x00, this means the
volume is forced off, else it is dependant on the wave */
int m_level_and[8];
/* these are the current channel volumes in MAME form */
int m_mame_volumes[8];
/* update step */
//int m_update_step;
sound_stream *m_sound_stream_var;
};
// device type definition
DECLARE_DEVICE_TYPE(DAVE, dave_device)
#endif // MAME_SOUND_DAVE_H
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