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Gary Arlen Kildall was an American computer scientist and microcomputer entrepreneur. During the 1970s, Kildall created the CP/M operating system among other operating systems and programming tools, and subsequently founded Digital Research, Inc. to market and sell his software products.
CP/M, originally standing for Control Program/Monitor and later Control Program for Microcomputers, is a mass-market operating system created in 1974 for Intel 8080/85-based microcomputers by Gary Kildall of Digital Research, Inc. CP/M is a disk operating system and its purpose is to organize files on a magnetic storage medium, and to load and run programs stored on a disk. Initially confined to single-tasking on 8-bit processors and no more than 64 kilobytes of memory, later versions of CP/M added multi-user variations and were migrated to 16-bit processors.
Digital Research, Inc. 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. Digital Research was originally based in Pacific Grove, California, later in Monterey, California.
MP/M is a discontinued multi-user version of the CP/M operating system, created by Digital Research developer Tom Rolander in 1979. It allowed multiple users to connect to a single computer, each using a separate terminal.
86-DOS is a discontinued operating system developed and marketed by Seattle Computer Products (SCP) for its Intel 8086-based computer kit.
Tim Paterson is an American computer programmer, best known for creating 86-DOS, an operating system for the Intel 8086. This system emulated the application programming interface (API) of CP/M, which was created by Gary Kildall. 86-DOS later formed the basis of MS-DOS, the most widely used personal computer operating system in the 1980s.
The PL/M programming language (an acronym of Programming Language for Microcomputers) is a high-level language conceived and developed by Gary Kildall in 1973 for Hank Smith at Intel for its microprocessors.
The IMSAI 8080 is an early microcomputer released in late 1975, based on the Intel 8080 and S-100 bus. It is a clone of its main competitor, the earlier MITS Altair 8800. The IMSAI is largely regarded as the first "clone" microcomputer. The IMSAI machine runs a highly modified version of the CP/M operating system called IMDOS. It was developed, manufactured and sold by IMS Associates, Inc.. In total, between 17,000 and 20,000 units were produced from 1975 to 1978.
IBMBIO.COM is a system file in many DOS operating systems. It contains the system initialization code and all built-in device drivers. It also loads the DOS kernel (IBMDOS.COM) and optional pre-loadable system components, displays boot menus, processes configuration files and launches the shell.
Relocation is the process of assigning load addresses for position-dependent code and data of a program and adjusting the code and data to reflect the assigned addresses. Prior to the advent of multiprocess systems, and still in many embedded systems, the addresses for objects were absolute starting at a known location, often zero. Since multiprocessing systems dynamically link and switch between programs it became necessary to be able to relocate objects using position-independent code. A linker usually performs relocation in conjunction with symbol resolution, the process of searching files and libraries to replace symbolic references or names of libraries with actual usable addresses in memory before running a program.
Gordon Edwin Eubanks, Jr. is an American microcomputer industry pioneer who worked with Gary Kildall in the early days of Digital Research (DRI).
A source-to-source translator, source-to-source compiler, transcompiler, or transpiler is a type of translator that takes the source code of a program written in a programming language as its input and produces an equivalent source code in the same or a different programming language. A source-to-source translator converts between programming languages that operate at approximately the same level of abstraction, while a traditional compiler translates from a higher level programming language to a lower level programming language. For example, a source-to-source translator may perform a translation of a program from Python to JavaScript, while a traditional compiler translates from a language like C to assembly or Java to bytecode. An automatic parallelizing compiler will frequently take in a high level language program as an input and then transform the code and annotate it with parallel code annotations or language constructs.
IMDOS was a modified version of the CP/M operating system for Intel 8080 processors, used by IMS Associates, Inc. (IMS) for their IMSAI 8080 personal computer. Since MITS would not license their operating system to other manufacturers, IMS approached Gary Kildall and paid a fixed fee of $25,000 for a non-exclusive CP/M license.
Vector Graphic, Inc., was an early microcomputer company founded in 1976, the same year as Apple Computer, during the pre-IBM PC era, along with the NorthStar Horizon, IMSAI, and MITS Altair.
Heathkit's H8 is an Intel 8080A-based microcomputer sold in kit form starting in 1977. The H8 is similar to the S-100 bus computers of the era, and like those machines is often used with the CP/M operating system on floppy disk.
A binary recompiler is a compiler that takes executable binary files as input, analyzes their structure, applies transformations and optimizations, and outputs new optimized executable binaries.
ISIS, short for Intel System Implementation Supervisor, is an operating system for early Intel microprocessors like the 8080. It was originally developed by Ken Burgett and Jim Stein under the management of Steve Hanna and Terry Opdendyk for the Intel Microprocessor Development System with two 8" floppy drives, starting in 1975, and later adopted as ISIS-II as the operating system for the PL/M compiler, assembler, link editor, and In-Circuit Emulator. The ISIS operating system was developed on an early prototype of the MDS 800 computer, the same type of hardware that Gary Kildall used to develop CP/M.
Thomas Alan Rolander is an American entrepreneur, engineer, and developer of the multitasking multiuser operating system MP/M created for microcomputers in 1979 while working as one of the first employees of Digital Research with Gary Kildall, the "father" of CP/M. CP/M and MP/M laid the groundwork to later Digital Research operating system families such as Concurrent CP/M, Concurrent DOS and Multiuser DOS. He also developed CP/NET.
Dorothy McEwen Kildall, often known as Dorothy McEwen, (1943–2005) was an American microcomputer industry pioneer. In 1974, she co-founded Digital Research, the company that developed the first computer language, the first compiler and the first mainstream operating system for microcomputers.
Kathryn Betty Strutynski was a mathematician and computer scientist, and attended University at Brigham Young University and the Naval Postgraduate School. Besides jobs at Pan Am Airways and Bechtel Corporation, she worked at Digital Research, where she contributed to the development of CP/M, the first mainstream operating system for microcomputers.
References
- 1 2 3 4 5 "UW CSE Alumnus John Torode founds IC Designs". University of Washington. 1996. Archived from the original on 2020-02-07. Retrieved 2020-02-24.
- ↑ Kildall, Gary Arlen (January 1980). "The History of CP/M, The Evolution of an Industry: One Person's Viewpoint" (Vol. 5, No. 1, Number 41 ed.). Dr. Dobb's Journal of Computer Calisthenics & Orthodontia. pp. 6–7. Retrieved 2013-06-03.
[…] The first commercial licensing of CP/M took place in 1975 with contracts between Digital Systems and Omron of America for use in their intelligent terminal, and with Lawrence Livermore Laboratories where CP/M was used to monitor programs in the Octopus network. Little attention was paid to CP/M for about a year. In my spare time, I worked to improve overall facilities […] By this time, CP/M had been adapted for four different controllers. […]
- ↑ Kildall, Gary Arlen (2016-08-02) [1993]. Kildall, Scott; Kildall, Kristin (eds.). Computer Connections: People, Places, and Events in the Evolution of the Personal Computer Industry (Manuscript, part 1). Kildall Family. Archived (PDF) from the original on 2016-11-17. Retrieved 2016-11-17.
- ↑ Shustek, Len (2016-08-02). "In His Own Words: Gary Kildall". Remarkable People. Computer History Museum.
- 1 2 3 Johnson, Herbert "Herb" R., ed. (2018-06-07). "CP/M and Digital Research Inc. (DRI) History - References". New Jersey, USA. Archived from the original on 2020-02-23. Retrieved 2020-02-23.
- ↑ "The Executive Microcomputer Conference & Exposition (EMCE)". InfoWorld - The Newsweekly for Microcomputer Users. Vol. 5, no. 25. Popular Computing, Inc. 1983-06-20. pp. 22–23. ISSN 0199-6649. Archived from the original on 2020-02-23. Retrieved 2020-02-23.
[…] Digital Microsystems, Inc. […] Embarcadero, Oakland, CA […] Digital Microsystems (DMS), originally Digital Systems, was founded in 1975 by Dr. John Torode who designed the first floppy disk subsystem for use on a micro. In 1974, DMS collaborated with Gary Kildall (Digital Research's founder) to design and implement the first microcomputer disk operating system, CP/M. […]
- ↑ Kline, Steve (2011-06-20). Johnson, Herbert "Herb" R. (ed.). "Steve Kline of Digital Micro Systems". New Jersey, USA. Archived from the original on 2020-02-25. Retrieved 2020-02-24.
- ↑ Johnson, Herbert "Herb" R. (2011-06-13) [November 2010]. "Digital Systems, Digital Microsystems". New Jersey, USA. Archived from the original on 2020-02-07. Retrieved 2020-02-24.
- 1 2 "Remembering Ted Kehl". Paul G. Allen School of Computer Science & Engineering. Allen School News. University of Washington. 2019-02-27. Archived from the original on 2020-02-25. Retrieved 2020-02-24.
