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class hexion_state : public driver_device
{
public:
hexion_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag) { }
UINT8 *m_vram[2];
UINT8 *m_unkram;
int m_bankctrl;
int m_rambank;
int m_pmcbank;
int m_gfxrom_select;
tilemap_t *m_bg_tilemap[2];
};
/*----------- defined in video/hexion.c -----------*/
VIDEO_START( hexion );
SCREEN_UPDATE( hexion );
WRITE8_HANDLER( hexion_bankswitch_w );
READ8_HANDLER( hexion_bankedram_r );
WRITE8_HANDLER( hexion_bankedram_w );
WRITE8_HANDLER( hexion_bankctrl_w );
WRITE8_HANDLER( hexion_gfxrom_select_w );
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