Bonum Certa Men Certa

IBM Microsoft Joint Development Agreement

Date: June 10 1985



: "IBM" .. and "MS" .. desire to establish .. a working relationship .. for evaluating the feasibility of and/or developing systems software products based upon IBM PC DOS and/or MS DOS including Linkers and Basic Interpreters, but excluding other languages;

: "MS Code", for the purposes of this Agreement, shall mean .. pre-existing computer programs and Derivative Works thereof, owned by MS ..

: In the event that MS desires to use the services of any third parties who are not employees of MS in its performance under this agreement, MS shall provide IBM with written notice of the third parties identities and the tasks performed ..

Boca Raton Area Counsel

International Business Machines Corporation

P.O. Box 1328

Boca, Raton Florida 33432


June 10 1985

Full Exhibit