INT 2F - CD-ROM v2.00+ - GET MSCDEX.EXE VERSION (GET VERSION)

	AX = 150Ch
	BX = 0000h
Return: BH = major version
	BL = minor version
Notes:	MSCDEX.EXE versions prior to 2.00 leave BX unchanged, thus BX should
	  be 0000h on entry
	Corel's CORELCDX.COM v1.01d returns 2.20, v1.12a returns 2.21
	Meridian Data's CDNETEX.EXE returns its own version number, e.g. 4.70
	J.M.A. Hall's CDEMU2.COM returns 2.10 (it is an MSCDEX emulator for
	  networked CD-ROM drives)
	Windows95 returns v2.95
	Novell DOS 7 NWCDEX.EXE returns the same version number reported in
	  its startup message
SeeAlso: AX=1500h"CD-ROM",AX=15FFh"CORELCDX"