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/*************************************************************************
Atari Crystal Castles hardware
*************************************************************************/
#include "cpu/m6502/m6502.h"
#include "machine/x2212.h"
class ccastles_state : public driver_device
{
public:
ccastles_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_nvram_4b(*this, "nvram_4b"),
m_nvram_4a(*this, "nvram_4a") ,
m_videoram(*this, "videoram"),
m_spriteram(*this, "spriteram"){ }
/* devices */
required_device<m6502_device> m_maincpu;
required_device<x2212_device> m_nvram_4b;
required_device<x2212_device> m_nvram_4a;
/* memory pointers */
required_shared_ptr<UINT8> m_videoram;
required_shared_ptr<UINT8> m_spriteram;
/* video-related */
const UINT8 *m_syncprom;
const UINT8 *m_wpprom;
const UINT8 *m_priprom;
bitmap_ind16 m_spritebitmap;
double m_rweights[3];
double m_gweights[3];
double m_bweights[3];
UINT8 m_video_control[8];
UINT8 m_bitmode_addr[2];
UINT8 m_hscroll;
UINT8 m_vscroll;
/* misc */
int m_vblank_start;
int m_vblank_end;
emu_timer *m_irq_timer;
UINT8 m_irq_state;
UINT8 m_nvram_store[2];
DECLARE_WRITE8_MEMBER(irq_ack_w);
DECLARE_WRITE8_MEMBER(led_w);
DECLARE_WRITE8_MEMBER(ccounter_w);
DECLARE_WRITE8_MEMBER(bankswitch_w);
DECLARE_READ8_MEMBER(leta_r);
DECLARE_WRITE8_MEMBER(nvram_recall_w);
DECLARE_WRITE8_MEMBER(nvram_store_w);
DECLARE_READ8_MEMBER(nvram_r);
DECLARE_WRITE8_MEMBER(nvram_w);
DECLARE_WRITE8_MEMBER(ccastles_hscroll_w);
DECLARE_WRITE8_MEMBER(ccastles_vscroll_w);
DECLARE_WRITE8_MEMBER(ccastles_video_control_w);
DECLARE_WRITE8_MEMBER(ccastles_paletteram_w);
DECLARE_WRITE8_MEMBER(ccastles_videoram_w);
DECLARE_READ8_MEMBER(ccastles_bitmode_r);
DECLARE_WRITE8_MEMBER(ccastles_bitmode_w);
DECLARE_WRITE8_MEMBER(ccastles_bitmode_addr_w);
DECLARE_CUSTOM_INPUT_MEMBER(get_vblank);
virtual void machine_start();
virtual void machine_reset();
virtual void video_start();
UINT32 screen_update_ccastles(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
};
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