Distinctive Software, Inc.
Distinctive Software, Inc. was founded by Don Mattrick and Jeff Sember in 1982. At least from 1988 until 1991 DSI resided in Vancouver, British Columbia (Canada). In 1991 the company was acquired by Electronic Arts and became EA Canada.
The company also had a porting division, Unlimited Software, founded by Don Mattrick in 1988, closely working together with the main company.