INT 10 - Diamond Stealth64 Video - INSTALLATION CHECK

	AX = 1DAAh
	BX = FDECh
Return: BX = CDEFh if Diamond Stealth64 Video 2001-series video card installed
	    AL = number of megabytes of video memory
	    AH = card type??? (4Bh for VL-Bus/5Bh for PCI)
	    CX = ??? (0000h)
	    SI:DI -> signature/copyright string