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// license:BSD-3-Clause
// copyright-holders:Ryan Holtz
/******************************************************************************
CD-i Mono-I SLAVE MCU simulation
-------------------
written by Ryan Holtz
*******************************************************************************
STATUS:
- Just enough for the Mono-I CD-i board to work somewhat properly.
TODO:
- Decapping and proper emulation.
*******************************************************************************/
#ifndef MAME_MACHINE_CDISLAVE_H
#define MAME_MACHINE_CDISLAVE_H
#pragma once
#include "sound/dmadac.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> cdislave_device
class cdislave_device : public device_t
{
public:
// construction/destruction
cdislave_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
auto int_callback() { return m_int_callback.bind(); }
// external callbacks
DECLARE_INPUT_CHANGED_MEMBER( mouse_update );
uint8_t* get_lcd_state() { return m_lcd_state; }
DECLARE_READ16_MEMBER( slave_r );
DECLARE_WRITE16_MEMBER( slave_w );
protected:
// device-level overrides
virtual void device_resolve_objects() override;
virtual void device_start() override;
virtual void device_reset() override;
virtual ioport_constructor device_input_ports() const override;
// internal callbacks
TIMER_CALLBACK_MEMBER( trigger_readback_int );
private:
devcb_write_line m_int_callback;
required_device_array<dmadac_sound_device, 2> m_dmadac;
required_ioport m_mousex;
required_ioport m_mousey;
required_ioport m_mousebtn;
// internal state
class channel_state
{
public:
channel_state() { }
uint8_t m_out_buf[4];
uint8_t m_out_index;
uint8_t m_out_count;
uint8_t m_out_cmd;
};
channel_state m_channel[4];
emu_timer *m_interrupt_timer;
uint8_t m_in_buf[17];
uint8_t m_in_index;
uint8_t m_in_count;
uint8_t m_polling_active;
uint8_t m_xbus_interrupt_enable;
uint8_t m_lcd_state[16];
uint16_t m_real_mouse_x;
uint16_t m_real_mouse_y;
uint16_t m_fake_mouse_x;
uint16_t m_fake_mouse_y;
// static internal members
// non-static internal members
void prepare_readback(const attotime &delay, uint8_t channel, uint8_t count, uint8_t data0, uint8_t data1, uint8_t data2, uint8_t data3, uint8_t cmd);
void perform_mouse_update();
void set_mouse_position();
};
// device type definition
DECLARE_DEVICE_TYPE(CDI_SLAVE, cdislave_device)
#endif // MAME_MACHINE_CDISLAVE_H
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