Int 21/AH=29h

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DOS 1+ - PARSE FILENAME INTO FCB

AH = 29h
AL = parsing options (see #01380)
DS:SI -> filename string (both '*' and '?' wildcards OK)
ES:DI -> buffer for unopened FCB

Return:
AL = result code 00h successful parse, no wildcards encountered 01h successful parse, wildcards present FFh failed (invalid drive specifier) DS:SI -> first unparsed character ES:DI buffer filled with unopened FCB (see #01345)

Notes: Asterisks in the name are expanded to question marks in the FCB. All processing stops when a filename terminator is encountered. Cannot be used with filespecs which include a path (DOS 2+). Novell NetWare monitors the result code since an 'invalid drive' may signal an attempt to reconnect a network drive; if there are no connections to the specified drive, NetWare attempts to build a connection and map the drive to the SYS:LOGIN directory

See Also: AH=0Fh - AH=16h - AH=26h

Bitfields for parsing options: Bit(s) Description (Table 01380) 0 skip leading separators 1 use existing drive number in FCB if no drive is specified, instead of setting field to zero 2 use existing filename in FCB if no base name is specified, instead of filling field with blanks 3 use existing extension in FCB if no extension is specified, instead of filling field with blanks 4-7 reserved (0)

Category: DOS Kernel - Int 21h - D

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