/*
	* Structure of super block
	* (block 1 on a file device)
	*/
struct sup
	{
	UINT isize;	/* number of blocks devoted to ilist */
	UINT fsize;	/* largest file block + 1 */
	UINT nfree;	/* number of free blocks in free[] */
	UINT free[100]; /* free block numbers */
	UINT ninode;	/* number of free inumbers in inode[] */
	UINT inode[100];/* free inode numbers */
	char flock;	/* irrelevant on disk */
	char ilock;	/* irrelevant on disk */
	ULONG time;	 /* time of last umount */
	};