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/*************************************************************************

    Cross Pang

*************************************************************************/

typedef struct _crospang_state crospang_state;
struct _crospang_state
{
	/* memory pointers */
	UINT16 *  bg_videoram;
	UINT16 *  fg_videoram;
	UINT16 *  spriteram;
//	UINT16 *  paletteram;		// currently this uses generic palette handling
	size_t    spriteram_size;

	/* video-related */
	tilemap   *bg_layer,*fg_layer;
	int       xsproff, ysproff;
	int       bestri_tilebank;

	/* devices */
	const device_config *audiocpu;
};


/*----------- defined in video/crospang.c -----------*/

VIDEO_START( crospang );
VIDEO_UPDATE( crospang );

WRITE16_HANDLER ( crospang_fg_scrolly_w );
WRITE16_HANDLER ( crospang_bg_scrolly_w );
WRITE16_HANDLER ( crospang_fg_scrollx_w );
WRITE16_HANDLER ( crospang_bg_scrollx_w );

WRITE16_HANDLER ( bestri_fg_scrolly_w );
WRITE16_HANDLER ( bestri_bg_scrolly_w );
WRITE16_HANDLER ( bestri_fg_scrollx_w );
WRITE16_HANDLER ( bestri_bg_scrollx_w );

WRITE16_HANDLER ( crospang_fg_videoram_w );
WRITE16_HANDLER ( crospang_bg_videoram_w );
WRITE16_HANDLER ( bestri_tilebank_w );