The wildcard character ? is allowed in the filename; if ? is present and there is more than one matching filename, all matching files will be deleted.Deletes all matching files from the current directory on the default or specified disk drive.
Call with:
AH = 13H
DS:DX = segment:offset of file control block
Returns:
If function successful (file or files deleted)
AL = 00H
If function unsuccessful (no matching files were found, or at least one matching file was read-only)
AL = FFH
Notes:
The wildcard character ? is allowed in the filename; if ? is present and there is more than one matching filename, all matching files will be deleted.
[2.0+] Int 21H Function 41H, which allows full access to the hierarchical directory structure, should be used in preference to this function.
[3.0+] If the program is running on a network, the user must have Create rights to the directory containing the file to be deleted.
Example:
Delete the file MYFILE.DAT from the current disk drive and directory.
myfcb db 0 ; drive = default
db 'MYFILE ' ; filename, 8 chars
db 'DAT' ; extension, 3 chars
db 25 dup (0) ; remainder of FCB
.
.
.
mov ah,13h ; function number
mov dx,seg myfcb ; address of FCB
mov ds,dx
mov dx,offset myfcb
int 21h ; transfer to MS-DOS
or al,al ; check status
jnz error ; jump, delete failed
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.
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