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// license:BSD-3-Clause
// copyright-holders:Aaron Giles
/*************************************************************************
ldv1000.h
Pioneer LD-V1000 laserdisc emulation.
*************************************************************************/
#pragma once
#ifndef __LDV1000_H__
#define __LDV1000_H__
#include "laserdsc.h"
#include "cpu/z80/z80.h"
#include "cpu/mcs48/mcs48.h"
#include "machine/z80ctc.h"
//**************************************************************************
// DEVICE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_LASERDISC_LDV1000_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, PIONEER_LDV1000, 0)
//**************************************************************************
// GLOBAL VARIABLES
//**************************************************************************
// device type definition
extern const device_type PIONEER_LDV1000;
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> pioneer_ldv1000_device
// base ldv1000 class
class pioneer_ldv1000_device : public laserdisc_device
{
public:
// construction/destruction
pioneer_ldv1000_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// input and output
void data_w(UINT8 data);
void enter_w(UINT8 data);
UINT8 status_r() const { return m_status; }
UINT8 status_strobe_r() const { return (m_portc1 & 0x20) ? ASSERT_LINE : CLEAR_LINE; }
UINT8 command_strobe_r() const { return (m_portc1 & 0x10) ? ASSERT_LINE : CLEAR_LINE; }
protected:
// timer IDs
enum
{
TID_MULTIJUMP = TID_FIRST_PLAYER_TIMER,
TID_VSYNC_OFF,
TID_VBI_DATA_FETCH
};
// device-level overrides
virtual void device_start();
virtual void device_reset();
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
virtual const rom_entry *device_rom_region() const;
virtual machine_config_constructor device_mconfig_additions() const;
// subclass overrides
virtual void player_vsync(const vbi_metadata &vbi, int fieldnum, attotime curtime);
virtual INT32 player_update(const vbi_metadata &vbi, int fieldnum, attotime curtime);
virtual void player_overlay(bitmap_yuy16 &bitmap) { }
// internal helpers
bool focus_on() const { return !(m_portb1 & 0x01); }
bool spdl_on() const { return !(m_portb1 & 0x02); }
bool laser_on() const { return (m_portb1 & 0x40); }
public:
// internal read/write handlers
DECLARE_WRITE_LINE_MEMBER( ctc_interrupt );
DECLARE_WRITE8_MEMBER( z80_decoder_display_port_w );
DECLARE_READ8_MEMBER( z80_decoder_display_port_r );
DECLARE_READ8_MEMBER( z80_controller_r );
DECLARE_WRITE8_MEMBER( z80_controller_w );
DECLARE_WRITE8_MEMBER( ppi0_porta_w );
DECLARE_READ8_MEMBER( ppi0_portb_r );
DECLARE_READ8_MEMBER( ppi0_portc_r );
DECLARE_WRITE8_MEMBER( ppi0_portc_w );
DECLARE_READ8_MEMBER( ppi1_porta_r );
DECLARE_WRITE8_MEMBER( ppi1_portb_w );
DECLARE_WRITE8_MEMBER( ppi1_portc_w );
protected:
// internal state
required_device<z80_device> m_z80_cpu; /* CPU index of the Z80 */
required_device<z80ctc_device> m_z80_ctc; /* CTC device */
emu_timer * m_multitimer; /* multi-jump timer device */
/* communication status */
UINT8 m_command; /* command byte to the player */
UINT8 m_status; /* status byte from the player */
bool m_vsync; /* VSYNC state */
/* I/O port states */
UINT8 m_counter_start; /* starting value for counter */
UINT8 m_counter; /* current counter value */
UINT8 m_portc0; /* port C on PPI 0 */
UINT8 m_portb1; /* port B on PPI 1 */
UINT8 m_portc1; /* port C on PPI 1 */
/* display/decode circuit emulation */
UINT8 m_portselect; /* selection of which port to access */
UINT8 m_display[2][20]; /* display lines */
UINT8 m_dispindex; /* index within the display line */
UINT8 m_vbi[7*3]; /* VBI data */
bool m_vbiready; /* VBI ready flag */
UINT8 m_vbiindex; /* index within the VBI data */
};
#endif
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