Compatibility: 2.0+
Expects: AX    4300H
DS:DX address of an ASCIIZ  string of a filespec 
                                                                  
Returns: AX    error code if CF is set to CY
CX    file attribute of specified file (if no error)
                                                                  
Info: Obtains the file attribute of a file.

DS:DX points to an ASCIIZ string in the form...
d:\path\filename.ext 0 
...which identifies the location and name of the file.  It must
not contain wildcards , but it may identify a directory name or
volume label.

If CF is set on return, an error code is in AX and no action was
taken.

See Also: Fn 4301H (set file attributes)
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DOS Fn 4300H: Query File Attribute