This is an old revision of the document!
FCB
Format of File Control Block:
| Offset | Size | Description |
|---|---|---|
| 00h | BYTE | drive number (0 = default, 1 = A, etc) |
| FFh is not allowed (signals extended FCB, see #01346) | ||
| 01h | 8 BYTEs | blank-padded file name |
| 09h | 3 BYTEs | blank-padded file extension |
| 0Ch | WORD | current block number |
| 0Eh | WORD | logical record size |
| 10h | DWORD | file size |
| 14h | WORD | date of last write (see #01666 at AX=5700h) |
| 16h | WORD | time of last write (see #01665 at AX=5700h) (DOS 1.1+) |
| 18h | 8 BYTEs | reserved (see #01347,#01348,#01349,#01350,#01351) |
| 20h | BYTE | record within current block |
| 21h | DWORD | random access record number (if record size is > 64 bytes, high byte is omitted) |
SeeAlso
#01346