Category: DOS kernel
Flags: Undocumented function

INT 2F - DOS 3.0+ internal - NORMALIZE ASCIZ FILENAME

	AX = 1211h
	DS:SI -> ASCIZ filename to normalize
	ES:DI -> buffer for normalized filename
Return: destination buffer filled with uppercase filename, with slashes turned
	to backslashes
SeeAlso: AX=121Eh,AX=1221h