INT 13 - FAST! v4.02+ - INSTALLATION CHECK                                      
	AX = 8006h
	CX = 6572h
	DX = 1970h
	ES:BX -> request packet (see #00295)
Return: AX = 1965h if installed
SeeAlso: AH=80h,AX=8001h,AX=8007h


Format of FAST! request packet:
Offset	Size	Description	(Table 00295)
 00h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	-> 19-byte signature string (see #00291)