INT 67 - EEMS - STB GENERIC ACCELERATOR CARD SUPPORT - INSTALLATION CHECK???    
	AX = 6100h
Return: AH = status (00h if installed???)
Note:	STB's RAPIDMAP.SYS EMSsee Expanded Memory Specification driver calls this function and AX=6101h if
	  the signature "GACXXX" is found at offset 0Ah in the INT 67 handler's
	  segment (i.e. a device driver named GACXXX?? has hooked INT 67)
SeeAlso: AX=6101h,INT 02/SI=0714h