Offset Size Description 00h DWORD pointer to next file table 04h WORD number of files in this table 06h 28h bytes per file Offset Size Description 00h BYTE number of file handles referring to this file 01h BYTE file open mode (see AH=3Dh) 02h BYTE file attribute 03h BYTE drive (0 = character device, 1 = A, 2 = B, etc) 04h 11 BYTEs filename in FCB format (no path,no period,blank-padded) 0Fh WORD ??? 11h WORD ??? 13h DWORD file size??? 17h WORD file date in packed format (see AX=5700h) 19h WORD file time in packed format (see AX=5700h) 1Bh BYTE device attribute (see AX=4400h) ---character device--- 1Ch DWORD pointer to device driver ---block device--- 1Ch WORD starting cluster of file 1Eh WORD relative cluster in file of last cluster read ------ 20h WORD absolute cluster number of current cluster 22h WORD ??? 24h DWORD current file position???