INT 2F - SRDISK v1.30+ - INSTALLATION CHECK                                     
	AX = 7200h
Return: AL = FFh if installed
	    ES = segment of device driver header (see #02856)
Program: SRDISK is a freeware resizeable RAMdisk by Marko Kohtala
SeeAlso: AX=7201h


Format of SRDISK device driver header:
Offset	Size	Description	(Table 02856)
 00h 10 BYTEs	same as standard device driver header
		  (see #01646 at INT 21/AH=52h)
 0Ah	BYTE	number of subunits (drives) supported by driver
 0Bh  3 BYTEs	signature "SRD"
 0Eh  4 BYTEs	memory type string ("XMSsee Extended Memory Specification "/"EMSsee Expanded Memory Specification ")
 12h  4 BYTEs	ASCII driver version string "N.NN"
 16h	BYTE	00h
 17h	BYTE	configuration format version (currently 00h or 01h)
 18h	WORD	offset of drive configuration data
SeeAlso: #01646