INT 21 - DOS 1+ - GET FILE SIZE FOR FCBsee File Control Block AH = 23h DS:DX -> unopened FCBsee File Control Block (see #01345), wildcards not allowed Return: AL = status 00h successful (matching file found) FCBsee File Control Block random record field filled with size in records, rounded up to next full record FFh failed (no matching file found) Notes: not supported by MS Windows 3.0 DOSX.EXE DOS extender MS-DOS returns nonsense if the FCBsee File Control Block record number field is set to a very large positive number, and status FFh if negative; DR DOS returns the correct file size in both cases BUG: APPEND for DOS 3.3+ corrupts DX if the file is not found SeeAlso: AH=42h