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/*
* The schematics don't seem to make a lot of sense when it
* comes to the video timing chain::
*
* * there are clear typos -- what is H132???
* * there are two HBLANK/HSYNC periods as the horizontal
* chain is drawn, which would give an alternating long
* line followed by a much shorter one. This cannot be right
* * the carry-out/load circuit on LS161@J8 is superflous
*
* These values also give a frame rate of about 45Hz, which is
* probably too low. I suspect that screen is not really
* 512 pixels wide -- most likely 384, which would give 60Hz
*
* Some of the graphics, like the starfield, is clocked with the
* 12MHz signal, effecitvely doubling the horizontal resolution
*/
#define STARSHP1_MASTER_CLOCK (12096000)
#define STARSHP1_CPU_CLOCK (STARSHP1_MASTER_CLOCK / 16)
#define STARSHP1_PIXEL_CLOCK (STARSHP1_MASTER_CLOCK / 2)
#define STARSHP1_HTOTAL (0x200)
#define STARSHP1_HBEND (0x000)
#define STARSHP1_HBSTART (0x200)
#define STARSHP1_VTOTAL (0x106)
#define STARSHP1_VBEND (0x000)
#define STARSHP1_VBSTART (0x0f0)
/*----------- defined in drivers/starshp1.c -----------*/
extern int starshp1_attract;
/*----------- defined in video/starshp1.c -----------*/
extern UINT8 *starshp1_playfield_ram;
extern UINT8 *starshp1_hpos_ram;
extern UINT8 *starshp1_vpos_ram;
extern UINT8 *starshp1_obj_ram;
extern int starshp1_ship_explode;
extern int starshp1_ship_picture;
extern int starshp1_ship_hoffset;
extern int starshp1_ship_voffset;
extern int starshp1_ship_size;
extern int starshp1_circle_hpos;
extern int starshp1_circle_vpos;
extern int starshp1_circle_size;
extern int starshp1_circle_mod;
extern int starshp1_circle_kill;
extern int starshp1_phasor;
extern int starshp1_collision_latch;
extern int starshp1_starfield_kill;
extern int starshp1_mux;
extern int starshp1_inverse;
READ8_HANDLER( starshp1_rng_r );
WRITE8_HANDLER( starshp1_sspic_w );
WRITE8_HANDLER( starshp1_ssadd_w );
WRITE8_HANDLER( starshp1_playfield_w );
PALETTE_INIT( starshp1 );
VIDEO_UPDATE( starshp1 );
VIDEO_EOF( starshp1 );
VIDEO_START( starshp1 );
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