INT 2F - DBLSPACE.BIN v6.2 - SET AUTOMOUNT DRIVES                               
	AX = 4A11h
	BX = 000Ah
	CX:DX = bitmask of drives on which to enable AutoMount
		(DX bit 0 = A:, CX bit 0 = P:, etc.)
Return: AX = 0000h if supported
	    CX:DX = old mask or 0000h:0000h on error
	BX destroyed
SeeAlso: AX=4A11h/BX=000Bh