/*****************************************************************************
*               maker.h                                                      *
*               Written by, Sohail Qayum Malik<sohail@stupidcomputing.com>   *
******************************************************************************/

#define                 _U8     unsigned char
#define                 _U16    unsigned int
#define                 _S16    int
#define                 _U32    unsigned long

#define                 FAT_COPIES                         *((_U8 *)bootSector + 16)
#define                 SECTORS_PER_FAT                    ((_U16 *)((_U8 *)bootSector + 22))[0]
#define                 BYTES_PER_SECTOR                   ((_U16 *)((_U8 *)bootSector + 11))[0]
#define                 SECTORS_PER_TRACK                  ((_U16 *)((_U8 *)bootSector + 24))[0]                                       
#define                 NUMBER_OF_DIRECTORY_ENTRIES        ((_U16 *)((_U8 *)bootSector + 17))[0]
#define                 MEDIA_DESCRIPTOR_TYPE              *((_U8 * )bootSector + 21)
#define                 NUMBER_OF_HEADS                    ((_U16 *)((_U8 *)bootSector + 26))[0]
#define                 DIRECTORY_ENTRY_SIZE               32

#define                 FAT_SCAN                0
#define                 DRIVE                   1
#define                 HELP                    2       
#define                 RDL                     3
#define                 LINK                    4
#define                 MAX_OPTIONS             5


_U8 arguments[MAX_OPTIONS];

struct directory{
   _U8  name[11]; 
   _U8  attribute;
   _U8  reserved[10];
   _U16 time;
   _U16 date;
   _U16 link;
   _U32 size;
};

/*
Defined in lib.asm
*/
extern unsigned int flag;

/* 
The number to be convert in ASCII representation of base16 
*/
extern void numberToAscii(unsigned int);

/* 
Far pointer to buffer, 
The service number and the Number of sectors to read,
The cylinder Number and sector number, 
The Head and the Drive.
*/
/*
It will return the AX register, AH is status code and the AL is number of 
sectors read.
The int 13 with service 02/03 sets the CF if there is error and then AH has 
the error code.
*/
extern int accessSectors(void far *, unsigned int, unsigned int, unsigned int);


/*
Far pointer to the address of FAT array.
Nuber of entries in a FAT.
link of a file into FAT
*/
extern void readFATEntry(void far *, unsigned int, unsigned int);

extern void evaluateFATEntries(_U16);

void directoryList(struct directory near * , _U16);

/*
The link into FAT,
The number of sectors covered by the boot, FAT and the root directory.
*/
/*
It accepts....
The link. 
The sector count which make up the FAT and the root directory.
It returns the cylinder number.... in DH
it returns the sector in DL and the head number in AH.... AL is zero.
*/
extern _U32 makeCHS(_U16, _U16);

extern void CHS(void);