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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.
*******************************************************************************/
#pragma once
#ifndef __CDISLAVE_H__
#define __CDISLAVE_H__
#include "emu.h"
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_CDISLAVE_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, MACHINE_CDISLAVE, 0)
#define MCFG_CDISLAVE_REPLACE(_tag) \
MCFG_DEVICE_REPLACE(_tag, MACHINE_CDISLAVE, 0)
//**************************************************************************
// 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);
// 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_start() override;
virtual void device_reset() override;
virtual void device_post_load() override { }
virtual void device_clock_changed() override { }
// internal callbacks
TIMER_CALLBACK_MEMBER( trigger_readback_int );
private:
// 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
extern const device_type MACHINE_CDISLAVE;
#endif // __CDISLAVE_H__
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