Int 2F Fn E000  - Setdrver.com V2.10+ - Installation Check                 [U]

   AX = E000h

Return: AX = 4A52h ("JR") if present
Program: SETDRVER is a public domain TSR by Jacob Rieper which sets the
     apparent DOS version analogously to MS-DOS SETVER

Notes: this installation check differs from the usual one of returning AL=FFh
   the SETDRVER API is fully emulated by Matthias Paul's FREEVER

See Also: AX=E000h/DX=4D50h,AX=E001h,INT 21/AH=52h