HelpPC 2.10 Quick Reference Utility Copyright 1991 David Jurgens

         TC: int biosdisk( int cmd, int drive, int head, int track,
                           int sector, int nsects, void *buffer )

       - prototype in bios.h

       - issues interrupt 0x13 for BIOS disk operations
       - drive = (0=A:, 1=2nd floppy, 0x80=drive 0, 0x81=drive 1
       - cmd = 0  reset diskette system (hard disk drive reset)
               1  return status of last disk operation, ignore parms
               2  read nsects disk sectors, with starting sector
                  defined by head, track, & sector, reading 512 bytes
                  per sector into buffer
               3  write nsects disk sectors, with starting sector
                  defined by head, track, & sector, writing 512 bytes
                  per sector from buffer
               4  verify nsects disk sectors, with starting sector
                  defined by head, track, & sector
               5  format a track defined by head & track, where buffer
                  points to a table of sector headers to be written

        For XT or AT only:

           6 - formats a track & sets bad sector flags
           7 - formats drive beginning at specific track
           8 - returns current drive parms in 1rst 4 bytes of buffer
           9 - initializes drive-pair characteristics
          10 - long read (4 extra bytes per sector for ECC)
          11 - long write (4 extra bytes per sector for ECC)
          12 - disk seek
          13 - alternate disk reset
          14 - reads sector buffer
          15 - writes sector buffer
          16 - tests if named drive is ready
          17 - recalibrates drive
          18 - controller ram diagnostic
          19 - drive diagnostic
          20 - controller internal diagnostic

       - drive numbers represent physical drives (0 = A:, 1 = B:,
         80h = drive 0, 81h = drive 1
       - disk reads should be retried at least 3 times
       - MS C uses _bios_disk()
       - see  INT 13  for more return codes and more information

Esc or Alt-X to exit biosdisk Home/PgUp/PgDn/End ←↑↓→