Int 21/AX=440Dh/CX=086Dh

MS-DOS 7.0+ - GENERIC IOCTL - ENUMERATE OPEN FILES

AX = 440Dh
CX = 086Dh / 486Dh
(category code 08h for FAT12/16, 48h for FAT32; minor code 6Dh)
BL = drive number (00h=default,01h=A:,etc)
DS:DX -> buffer for ASCIZ pathname
SI = file index (0000h to number of open files-1)
DI = enumeration type (0000h all files, 0001h unmovable files)

Return:
CF set on error
AX = error code (01h,02h,12h,etc.) (see #01680 at AH=59h/BX=0000h)
0012h if file index is out of range
CF clear if successful
AX = file open mode (BX from AX=6C00h or AX=716Ch)
CX = file type (see #01577)

See Also: AX=440Dh/CX=086Eh - AX=6C00h - AX=716Ch



(Table 01577)
Values for file type:
0000h  normal file
0001h  memory-mapped file (unmovable)
0002h  unmovable file
0004h  swap file

Category: DOS Kernel - Int 21h - M

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