Retro video games delivered to your door every month!
Click above to get retro games delivered to your door ever month!
X-Hacker.org- Ralf Brown's Interrupt List (Part 1,2) - format of dos 2.x disk buffer: http://www.X-Hacker.org [<<Previous Entry] [^^Up^^] [Next Entry>>] [Menu] [About The Guide]
Format of DOS 2.x disk buffer:
Offset  Size    Description
 00h    DWORD   pointer to next disk buffer, offset = FFFFh if last
                least-recently used buffer is first in chain
 04h    BYTE    drive (0=A, 1=B, etc), FFh if not in use
 05h  3 BYTEs   unused??? (seems always to be 00h 00h 01h)
 08h    WORD    logical sector number
 0Ah    BYTE    number of copies to write (1 for non-FAT sectors)
 0Bh    BYTE    sector offset between copies if multiple copies to be written
 0Ch    DWORD   pointer to DOS Drive Parameter Block (see AH=32h)
 10h            buffered data

Online resources provided by: http://www.X-Hacker.org --- NG 2 HTML conversion by Dave Pearson