Digital Research, Inc. (DR or DRI) was a privately held American software company created by Gary Kildall to market and develop his CP/M operating system and related 8-bit, 16-bit and 32-bit systems like MP/M, Concurrent DOS, FlexOS, Multiuser DOS, DOS Plus, DR DOS and GEM. It was the first large software company in the microcomputer world.[9] Digital Research was originally based in Pacific Grove, California, later in Monterey, California.
After Microsoft presented MS-DOS that was based on CP/M, Digital Research released CP/M-86, which was the first 16-bit system (1981, adapted to the IBM PC in early 1982), which was meant as direct competitor to MS-DOS. There followed the multi-tasking MP/M-86 (1981), and Concurrent CP/M (1982), a single-user version featuring virtual consoles from which applications could be launched to run concurrently.[11] The company's documentation had a poor reputation, with Jerry Pournelle in 1982 describing it as seemingly "encrypted and translated into Swahili".[12] and InfoWorld calling its CP/M manuals incomplete, incomprehensible, and poorly indexed.[13]
By 1983, DRI began using distributors to sell its CP/M-86 applications in stores.[14] In May 1983 the company announced that it would offer PC DOS versions of all of its languages and utilities.[15] It remained influential, with US$45 million in 1983 sales making Digital Research the fourth-largest microcomputer software company.[2] Admitting that it had "lost" the 8088 software market but hoped to succeed with the Intel 80286 and Motorola 68000, by 1984 the company formed a partnership with AT&T Corporation to develop software for Unix System V and sell its own and third-party products in retail stores.[16] Pournelle warned later that year, however, that "Many people of stature seem to have left or are leaving Digital Research. DR had better get its act together."[17]
Digital Research developed CP/M-86 as an alternative to MS-DOS and it was made available through IBM in early 1982. The company later created an MS-DOS clone with advanced features called DR DOS, which pressured Microsoft to further improve its own DOS.
Microsoft seized this opportunity to supply an OS, in addition to other software (e.g., BASIC) for the new IBM PC. When the IBM PC arrived in late 1981, it came with PC DOS, an OEM version of MS-DOS, which was developed from 86-DOS, which Microsoft had acquired for this purpose. By mid-1982, MS-DOS was also marketed for use in hardware-compatible non-IBM computers. This one decision resulted in Microsoft becoming the leading name in computer software.
This story is detailed from the point of view of Microsoft and IBM in the PBS series Triumph of the Nerds,[18] and from the point of view of Gary Kildall's friends and coworkers in The Computer Chronicles.[19]
The competition between MS-DOS and DR DOS is one of the more controversial chapters of microcomputer history. Microsoft offered better licensing terms to any computer manufacturer that committed to selling MS-DOS with every system they shipped, making it uneconomical for them to offer systems with another OS, since the manufacturer would still be required to pay a license fee to Microsoft for that system. This practice led to a US Department of Justice investigation, resulting in a decision in 1994 that barred Microsoft from "per-processor" licensing.[20]
In 1985, soon after the introduction of the 80286-based IBM PC/AT, Digital Research introduced a real-time system, initially called Concurrent DOS 286.
Graphics Environment Manager (1985)
Graphics Environment Manager (GEM) Graphic User Interface (GUI) in 1985
In 1985 Digital Research also produced a microcomputer version of the GKS graphics standard (related to NAPLPS) called GSX, and later used this as the basis of their GEMGUI. Less known are their application programs, limited largely to the GSX-based DR DRAW and a small suite of GUI programs for GEM. After the development of GEM, Microsoft introduced Windows 1.0.
In one beta release of Windows 3.1, Microsoft included hidden code (later called the AARD code) that detected DR DOS and displayed a cryptic error message.[21][4]
Digital Research was purchased by Novell for US$80 million in 1991,[22] primarily for Novell to gain access to their operating system line, including FlexOS, which had already been adopted as the basis for Siemens S5-DOS/MT, IBM 4680 OS, and the 4690 OS.
Notable employees
Several notable employees worked at Digital Research, some of which later made important contributions to the IT industry, such as: