readabsolutesectors () en writeabsolutesectors () Functie

 
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De codage van functiesreadabsolutesectors () en writeabsolutesectors () zijn gegeven daarna:

//// Functie om absolute sector (s) te lezen \\\\

int readabsolutesectors ( int drive,
unsigned long sectornumber,
int numofsectors,
void *buffer )
{

union REGS i, o ;
struct SREGS s ;
struct diskaddrpacket pp ;

pp.packetsize = 16 ; /* pakket grootte = 10H*/
pp.reserved = 0 ; /* Gereserveerd = 0*/

pp.blockcount = numofsectors ; /* Aantal te lezen sectoren */

/*Aantal te lezen sectoren */

pp.bufferaddress = (char far*) MK_FP ( FP_SEG((void
far*)buffer), FP_OFF((void far*)buffer));

pp.blocknumber[0] = sectornumber ; /* Het te lezen aantal van de sector */

pp.blocknumber[1] = 0 ; /* Het aantal van het blok */

i.h.ah = 0x42 ; /*Het Aantal van de functie*/
i.h.dl = drive ; /* Het fysieke Aantal van de Aandrijving*/

i.x.si = FP_OFF ( (void far*)&pp ) ; /* ds:si voor bufferparameters*/

s.ds = FP_SEG ( (void far*)&pp ) ; /*ds:si voor bufferparameters */

/* Haal de gespecificeerde Functie van int. 13H met de waarden van het segmentregister aan */

int86x ( 0x13, &i, &o, &s ) ;

if ( o.x.cflag==1)
return 0 ; /*mislukking */

else
return 1 ; /* succes*/
}

Sample Chapters from book DATA RECOVERY WITH AND WITHOUT PROGRAMMING by Author Tarun Tyagi, translated using machine translation. See original English contents on Data recovery book pages.

Data Recovery with & without Programming


Publishers of the Book
Number of Pages
ISBN
Price of the Book


BPB Publications, New Delhi, India
540
81-7656-922-4
$69.00 (Including Shipping Charges, Cost of Book and Other expenses, Free Source Code CD included with the Book)





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