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/***************************************************************************
Sega Outrun hardware
****************************************************************************
Copyright Aaron Giles
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name 'MAME' nor the names of its contributors may be
used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY AARON GILES ''AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***************************************************************************/
#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"
// ======================> segaorun_state
class segaorun_state : public driver_device
{
public:
// construction/destruction
segaorun_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(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_workram(*this, "workram"),
m_custom_map(NULL),
m_shangon_video(false),
m_scanline_timer(NULL),
m_irq2_state(0),
m_adc_select(0),
m_vblank_irq_state(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 );
// 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);
// wrappers for legacy functions (to be removed)
template<read16_space_func _Legacy>
READ16_MEMBER( legacy_wrapper_r ) { return _Legacy(&space, offset, mem_mask); }
template<write16_space_func _Legacy>
WRITE16_MEMBER( legacy_wrapper ) { _Legacy(&space, offset, data, mem_mask); }
protected:
// timer IDs
enum
{
TID_SCANLINE,
TID_IRQ2_GEN,
TID_SOUND_WRITE
};
// device overrides
virtual void machine_reset();
virtual void video_start();
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
// internal helpers
void update_main_irqs();
static void m68k_reset_callback(device_t *device);
// 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;
// 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;
};
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