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/*----------- defined in drivers/konamigx.c -----------*/

extern UINT32 *gx_psacram, *gx_subpaletteram32;


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

// 2nd-Tier GX/MW Hardware Functions

void K053936GP_set_offset(int chip, int xoffs, int yoffs);
void K053936GP_clip_enable(int chip, int status);
void K053936GP_set_cliprect(int chip, int minx, int maxx, int miny, int maxy);



// 1st-Tier GX/MW Variables and Functions
extern UINT8  konamigx_wrport1_0, konamigx_wrport1_1;
extern UINT16 konamigx_wrport2;



// Sprite Callbacks

/* callbacks should return color codes in this format:
    fedcba9876543210fedcba9876543210
    ----------------xxxxxxxxxxxxxxxx (bit 00-15: color)
    --------------xx---------------- (bit 16-17: blend code)
    ------------xx------------------ (bit 18-19: brightness code)
    -x------------------------------ (bit 30   : skip shadow)
    x------------------------------- (bit 31   : full shadow)
*/
#define K055555_COLORMASK	0x0000ffff
#define K055555_MIXSHIFT	16
#define K055555_BRTSHIFT	18
#define K055555_SKIPSHADOW	0x40000000
#define K055555_FULLSHADOW	0x80000000



// Centralized Sprites and Layer Blitter

/* Mixer Flags
    fedcba9876543210fedcba9876543210
    --------------------FFEEDDCCBBAA (layer A-F blend modes)
    ----------------DCBA------------ (layer A-D line/row scroll disables)
    ----FFEEDDCCBBAA---------------- (layer A-F mix codes in forced blending)
    ---x---------------------------- (disable shadows)
    --x----------------------------- (disable z-buffering)
*/
#define GXMIX_BLEND_AUTO	0			// emulate all blend effects
#define GXMIX_BLEND_NONE	1			// disable all blend effects
#define GXMIX_BLEND_FAST	2			// simulate translucency
#define GXMIX_BLEND_FORCE	3			// force mix code on selected layer(s)
#define GXMIX_NOLINESCROLL	0x1000		// disable linescroll on selected layer(s)
#define GXMIX_NOSHADOW		0x10000000	// disable all shadows (shadow pens will be skipped)
#define GXMIX_NOZBUF		0x20000000	// disable z-buffering (shadow pens will be drawn as solid)

// Sub Layer Flags
#define GXSUB_K053250	0x10	// chip type: 0=K053936 ROZ+, 1=K053250 LVC
#define GXSUB_4BPP		0x04	//  16 colors
#define GXSUB_5BPP		0x05	//  32 colors
#define GXSUB_8BPP		0x08	// 256 colors

void konamigx_mixer(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect,
					tilemap_t *sub1, int sub1flags,
					tilemap_t *sub2, int sub2flags,
					int mixerflags, bitmap_t* extra_bitmap, int rushingheroes_hack);

void konamigx_mixer_init(running_machine &machine, int objdma);
void konamigx_mixer_primode(int mode);


void konamigx_objdma(void);
extern UINT16 *K053247_ram;

VIDEO_START(konamigx_5bpp);
VIDEO_START(konamigx_6bpp);
VIDEO_START(konamigx_6bpp_2);
VIDEO_START(konamigx_type3);
VIDEO_START(konamigx_type4);
VIDEO_START(konamigx_type4_sd2);
VIDEO_START(konamigx_type4_vsn);
VIDEO_START(le2);
VIDEO_START(dragoonj);
VIDEO_START(winspike);
VIDEO_START(opengolf);
VIDEO_START(racinfrc);
SCREEN_UPDATE(konamigx);

WRITE32_HANDLER( konamigx_palette_w );
#ifdef UNUSED_FUNCTION
WRITE32_HANDLER( konamigx_palette2_w );
WRITE32_HANDLER( konamigx_555_palette_w );
WRITE32_HANDLER( konamigx_555_palette2_w );
#endif
WRITE32_HANDLER( konamigx_tilebank_w );
WRITE32_HANDLER( konamigx_t1_psacmap_w );
WRITE32_HANDLER( konamigx_t4_psacmap_w );

extern int konamigx_current_frame;
WRITE32_HANDLER( konamigx_type3_psac2_bank_w );
extern UINT32* konamigx_type3_psac2_bank;


/*----------- defined in machine/konamigx.c -----------*/

// K055550/K053990/ESC protection devices handlers
READ16_HANDLER ( K055550_word_r );
WRITE16_HANDLER( K055550_word_w );
WRITE16_HANDLER( K053990_martchmp_word_w );
void konamigx_esc_alert(UINT32 *srcbase, int srcoffs, int count, int mode);

void fantjour_dma_install(running_machine &machine);