/*  :ts=8 bk=0
 * Lotsa defines and a few global externals.
 */

#define	REV		0L
#define BLOCKSIZE	TD_SECTOR
#define NUMBLOCKS	(NUMCYLS * NUMHEADS * NUMSECS)
#define ROOTBLOCK	(NUMBLOCKS / 2)
#define BITMAPINDEX	79
#define NUMLONGS	(NUMBLOCKS / 32)
#define XX		6L
#define	YY		5L
#define XOFF		30L
#define YOFF		25L
#define BRKOVER		(NUMSECS * YY + YOFF)
#define SEP		6
#define LABEL_Y		(2*NUMSECS*YY+SEP+YOFF+10)
#define ever		(;;)

/*	Offsets into interesting fields in disk blocks	*/
#define SIZE		(BLOCKSIZE/4)
#define NAME		(SIZE-20)
#define HASHCHAIN	(SIZE-4)
#define EXTENSION	(SIZE-2)
#define TYPE		0
#define HEADER_KEY	1
#define SECONDARY_TYPE	(SIZE-1)
#define DIR_HASHTAB	6
#define FH_BLOCKLIST	(SIZE-51)
#define FH_ENDLIST	6

/*	Type definitions (coerced from the DOS using DISKED)	*/
#define T_SHORT		2
#define T_DATA		8
#define T_LIST		16
#define ST_ROOT		1
#define ST_DIR		2
#define ST_FILE		-3


extern void	*OpenLibrary(), *OpenWindow(), *AllocMem(), *Lock(), *Info(),
		*CreatePort(), *CreateExtIO(), *GetMsg(), *index();
extern long	TextLength(), OpenDevice(), ReadPixel();