oaa@houxl.UUCP (O.ALEXANDER) (11/29/84)
I recently purchased an Atari 1050 with DOS 3, and would like to convert a program (Disk Tool: ANALOG Magazine #8,9) that allows you to read DOS 2 disk sectors directly. However DOS 3 is much different in the layout of sectors and information on the disk medium. So far I've determined that: 1. sectors are grouped into blocks of 8 2. directory is at block 2 (sector 16) 3. each directory entry is 16 bytes long per file 0 = Status, 1-8 = filename, 9-11 = extension, 12 = size in blocks, 13 = start block (+3 sectors for boot/directory) 14,15 = ??? (file size perhaps) 4. in status of directory bit 0 = file deleted, and bit 1 = file protected 5. no linking of sectors, everything is sequental in blocks, perhaps blocks are linked Anyway the question is: does anyone have more information of the structure used by DOS 3, what the bits in the Status and the last two bytes of a directory entry means. Also any other useful information would be appreciated. Thanks, Owen Alexander !houxl!oaa