INT 21 - Windows95 - LONG FILENAME - CREATE SUBST AX = 71AAh BH = 00h BL = drive number (00h = default, 01h = A:, etc.) DS:DX -> ASCIZ pathname to associate with drive letter Return: CF clear if successful CF set on error AX = error code (see #01680) 7100h if function not supported SeeAlso: AX=71AAh/BH=01h,AX=71AAh/BH=02h,INT 2F/AX=1000h,#01643