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// license:BSD-3-Clause
// copyright-holders:Aaron Giles
/***************************************************************************
Sega Outrun hardware
***************************************************************************/
#include "cpu/m68000/m68000.h"
#include "cpu/z80/z80.h"
#include "machine/i8255.h"
#include "machine/nvram.h"
#include "machine/segaic16.h"
#include "video/segaic16.h"
#include "video/segaic16_road.h"
#include "video/sega16sp.h"
// ======================> segaorun_state
class segaorun_state : public sega_16bit_common_base
{
public:
// construction/destruction
segaorun_state(const machine_config &mconfig, device_type type, const char *tag)
: sega_16bit_common_base(mconfig, type, tag),
m_mapper(*this, "mapper"),
m_maincpu(*this, "maincpu"),
m_subcpu(*this, "subcpu"),
m_soundcpu(*this, "soundcpu"),
m_i8255(*this, "i8255"),
m_nvram(*this, "nvram"),
m_sprites(*this, "sprites"),
m_segaic16vid(*this, "segaic16vid"),
m_segaic16road(*this, "segaic16road"),
m_bankmotor_timer(*this, "bankmotor"),
m_digital_ports(*this, digital_ports),
m_adc_ports(*this, "ADC"),
m_workram(*this, "workram"),
m_custom_map(nullptr),
m_shangon_video(false),
m_scanline_timer(nullptr),
m_irq2_state(0),
m_adc_select(0),
m_vblank_irq_state(0),
m_bankmotor_pos(0x8000),
m_bankmotor_delta(0)
{ }
// PPI read/write handlers
DECLARE_READ8_MEMBER( unknown_porta_r );
DECLARE_READ8_MEMBER( unknown_portb_r );
DECLARE_READ8_MEMBER( unknown_portc_r );
DECLARE_WRITE8_MEMBER( unknown_porta_w );
DECLARE_WRITE8_MEMBER( unknown_portb_w );
DECLARE_WRITE8_MEMBER( video_control_w );
DECLARE_READ8_MEMBER( bankmotor_limit_r );
DECLARE_WRITE8_MEMBER( bankmotor_control_w );
// memory mapping
void memory_mapper(sega_315_5195_mapper_device &mapper, UINT8 index);
UINT8 mapper_sound_r();
void mapper_sound_w(UINT8 data);
// main CPU read/write handlers
DECLARE_READ16_MEMBER( misc_io_r );
DECLARE_WRITE16_MEMBER( misc_io_w );
DECLARE_WRITE16_MEMBER( nop_w );
// Z80 sound CPU read/write handlers
DECLARE_READ8_MEMBER( sound_data_r );
// game-specific driver init
DECLARE_DRIVER_INIT(generic);
DECLARE_DRIVER_INIT(outrun);
DECLARE_DRIVER_INIT(outrunb);
DECLARE_DRIVER_INIT(shangon);
// video updates
UINT32 screen_update_outrun(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
UINT32 screen_update_shangon(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
DECLARE_WRITE16_MEMBER( tileram_w ) { m_segaic16vid->tileram_w(space,offset,data,mem_mask); };
DECLARE_WRITE16_MEMBER( textram_w ) { m_segaic16vid->textram_w(space,offset,data,mem_mask); };
DECLARE_READ16_MEMBER( sega_road_control_0_r ) { return m_segaic16road->segaic16_road_control_0_r(space,offset,mem_mask); };
DECLARE_WRITE16_MEMBER( sega_road_control_0_w ) { m_segaic16road->segaic16_road_control_0_w(space,offset,data,mem_mask); };
CUSTOM_INPUT_MEMBER( bankmotor_pos_r );
TIMER_DEVICE_CALLBACK_MEMBER(bankmotor_update);
protected:
// timer IDs
enum
{
TID_SCANLINE,
TID_IRQ2_GEN,
TID_SOUND_WRITE
};
// device overrides
virtual void machine_reset() override;
virtual void video_start() override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
// internal helpers
void update_main_irqs();
DECLARE_WRITE_LINE_MEMBER(m68k_reset_callback);
// custom I/O
DECLARE_READ16_MEMBER( outrun_custom_io_r );
DECLARE_WRITE16_MEMBER( outrun_custom_io_w );
DECLARE_READ16_MEMBER( shangon_custom_io_r );
DECLARE_WRITE16_MEMBER( shangon_custom_io_w );
// devices
required_device<sega_315_5195_mapper_device> m_mapper;
required_device<m68000_device> m_maincpu;
required_device<m68000_device> m_subcpu;
required_device<z80_device> m_soundcpu;
required_device<i8255_device> m_i8255;
optional_device<nvram_device> m_nvram;
required_device<sega_16bit_sprite_device> m_sprites;
required_device<segaic16_video_device> m_segaic16vid;
required_device<segaic16_road_device> m_segaic16road;
optional_device<timer_device> m_bankmotor_timer;
// input ports
DECLARE_IOPORT_ARRAY(digital_ports);
required_ioport_array<4> m_digital_ports;
optional_ioport_array<8> m_adc_ports;
// memory
required_shared_ptr<UINT16> m_workram;
// configuration
read16_delegate m_custom_io_r;
write16_delegate m_custom_io_w;
const UINT8 * m_custom_map;
bool m_shangon_video;
// internal state
emu_timer * m_scanline_timer;
UINT8 m_irq2_state;
UINT8 m_adc_select;
UINT8 m_vblank_irq_state;
int m_bankmotor_pos;
int m_bankmotor_delta;
};
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