INT 2F - FN32 32 character filename utilities - INSTALLATION CHECK AX = C000h Return: AL = FFh if installed ES:DI -> signature string "FN32 32CHAR TSR" Program: FN32 is a TSR which supports 32 character filenames under PC/MS-DOS Note: the TSR intercepts INT 21 calls and performs filename substitution by managing dictionary files in each directory which contains long filenames