INT 2F - DBLSPACE.BIN - "GetVersion" - INSTALLATION CHECK
	AX = 4A11h
	BX = 0000h
Return: AX = 0000h (successful)
	BX = 444Dh ("DM")
	CL = first drive letter used by DBLSPACE (41h ['A'] = A:)
	CH = number of drive letters used by DBLSPACE
	DX = internal DBLSPACE.BIN version number (bits 14-0)
		bit 15 set if DBLSPACE.BIN has not yet been relocated to final
		  position in memory (i.e. DBLSPACE.SYS /MOVE)
Program: DBLSPACE.BIN is the resident driver for DoubleSpace, the
	  disk-compression software bundled with MS-DOS 6.0 and 6.20
Notes:	this function is also supported by the version of SuperStor bundled
	  with IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. DOS 6.x and "preloading" versions of Stacker
	the complete DBLSPACE.BIN API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running.  Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. is still supported by MS-DOS 6.22's
	  DRVSPACE.BIN
SeeAlso: AX=4A11h/BX=0001h,AX=4A11h/BX=0002h,AX=4A11h/BX=0003h
SeeAlso: AX=4A11h/BX=0005h,AX=4A11h/BX=0007h,AX=4A11h/BX=FFFFh
SeeAlso: INT 21/AX=4404h"DBLSPACE"