/*       These are various items which are common to the viewing program
		(jvmain.c) and the video setup program (jvsetup.c).


*/

extern	unsigned char cirrus, everex, paradise, tseng, trident;
extern	unsigned char t8900, ativga, aheada, aheadb;
extern	unsigned char oaktech, video7, chipstech, tseng4, genoa;
extern	unsigned char ncr, compaq, vesa, hi_color;		/* signals existance of hi color card */
extern	unsigned char vga512, vga1024;
extern	int maxx, maxy;

#define	number_VGA_cards 18			/* the number of VGA cards supported */
#define	number_modes_supported 6	/* the max number of video modes for each card */
#define	number_modes_in_list 10		/* the max number of modes in the user selected list */


/*		definations for reading keyboard */

#define arrow_left 0x4b
#define arrow_right 0x4d
#define arrow_up 0x48
#define arrow_down 0x50
#define page_up 0x49
#define page_down 0x51
#define escape 27
#define home 71
#define end 79
#define RTN 13
#define insert 82
#define delete 83
#define plus 43
#define minus 45


struct mode {
	int x_size;
	int y_size;
	unsigned char mode_number;};


/* for this struct.  All items should be in ascending order with 0x00 for the unused mode #'s */
struct video_card {
	char name[20];
	struct mode vid_mode[number_modes_supported];
	} video_cards[number_VGA_cards] =
	{ {"ahead", {{320, 200, 0x13}, {640, 400, 0x60}, {640, 480, 0x61}, {800, 600, 0x62}, {0000, 000, 0x00}, {0, 0, 0x0}}},
	  {"ati", {{320, 200, 0x13}, {640, 400, 0x61}, {640, 480, 0x62}, {800, 600, 0x63}, {1024, 768, 0x64}, {0, 0, 0x0}}},
	  {"chips & tech", {{320, 200, 0x13}, {640, 400, 0x78}, {640, 480, 0x79}, {800, 600, 0x7b}, {0, 0, 0x0}, {0, 0, 0x0}}},
	  {"everex", {{320, 200, 0x13}, {640, 400, 0x14}, {512, 480, 0x15}, {640, 480, 0x30}, {800, 600, 0x31}, {0, 0, 0x0}}},
	  {"oak-tek", {{320, 200, 0x13}, {640, 480, 0x53}, {800, 600, 0x54}, {0, 0, 0x0}, {0, 0, 0x0}, {0, 0, 0x0}}},
	  {"genoa", {{320, 200, 0x13}, {640, 400, 0x7e}, {640, 480, 0x5c}, {720, 512, 0x5d}, {800, 600, 0x5e}, {0, 0, 0x0}}},
	  {"NCR", {{320, 200, 0x13}, {640, 400, 0x5e}, {640, 480, 0x5f}, {800, 600, 0x5c}, {0, 0, 0x0}, {0, 0, 0x0}}},
	  {"paradise", {{320, 200, 0x13}, {640, 400, 0x5e}, {640, 480, 0x5f}, {0, 0, 0x0}, {0, 0, 0x0}, {0, 0, 0x0}}},
	  {"trident", {{320, 200, 0x13}, {640, 400, 0x5c}, {640, 480, 0x5d}, {800, 600, 0x5e}, {0, 0, 0x00}, {0, 0, 0x0}}},
	  {"trident 8900", {{320, 200, 0x13}, {640, 400, 0x5c}, {640, 480, 0x5d}, {800, 600, 0x5e}, {1024, 768, 0x62}, {0, 0, 0x0}}},
	  {"tseng", {{320, 200, 0x13}, {640, 350, 0x2d}, {640, 480, 0x2e}, {800, 600, 0x30}, {1024, 768, 0x38}, {0, 0, 0x0}}},
	  {"tseng 4000", {{320, 200, 0x13}, {640, 350, 0x2d}, {640, 400, 0x2f}, {640, 480, 0x2e}, {800, 600, 0x30}, {1024, 768, 0x38}}},
	  {"video 7", {{320, 200, 0x13}, {640, 400, 0x66}, {640, 480, 0x67}, {800, 600, 0x69}, {1024, 768, 0x6a}, {0, 0, 0x0}}},
	  {"cirrus", {{320, 200, 0x13}, {640, 480, 0x2e}, {0, 0, 0x0}, {0, 0, 0x0}, {0, 0, 0x0}, { 0, 0, 0x0}}},
	  {"compaq", {{320, 200, 0x13}, {640, 480, 0x2e}, {0, 0, 0x0}, {0, 0, 0x0}, {0, 0, 0x0}, { 0, 0, 0x0}}},
	  {"vesa", {{320, 200, 0x13}, {640, 400, 0x100}, {640, 480, 0x101}, {800, 600, 0x103}, {1024, 768, 0x106}, {1280, 1024, 0x107}}},
	  {"ATI, hi color", {{1280, 480, 0x72}, {0, 0, 0x0}, {0, 0, 0x0}, {0, 0, 0x0}, {0, 0, 0x0}, {0, 0, 0x0}}},
	  {"Tseng, hi color", {{320, 200, 0x13}, {640, 350, 0x2d}, {640, 400, 0x2f}, {640, 480, 0x2e}, {800, 600, 0x30}, {0, 0, 0x0}}}
	};

/* now the list of working modes as selected by the user - 10 maximum */
/* one extra item at end (always 0) to simplify deletion */
struct {
	int	card_ID;
	int	which_mode;
	} ok_mode[number_modes_in_list+1];


/* these are for the graphics interface */

	unsigned char palbuf[256][3];
	int svga;
	unsigned int color;
	int video_mode_used;		/* mode number index for card */
	int card_used;				/* the current selected mode for viewing */
	int card_id;				/* card id # - as found by autodetection (valid if svga = 1) */
	int enable_pan;			/* enough memory for panning && needed?? */
	int shrink;					/* 1 = normal, 2 = 1/2, 3 = 1/3 ... */