Mark Williams Company
The Mark Williams Company was a software company based in Chicago.
Originally operated under the name paint manufacturers. Its owner, the company completed for reasons of age and handed over the remains of his son Robert " Bob" Swartz. This opened under the old company in 1980, the software company. On February 1, 1995, the company was insolvent. It never had more than 20 employees. The rights to the products of the company were transferred to the bank, which they later, including to a company called Open Coherent LLC, resold.
Products
Among the best known products of the 15 - year history have included:
Coherent
The first affordable Unix clone for inexpensive PC hardware: The development of Coherent, essentially by four employees, was from about 1981 to a DEC PDP-11/45 place a little later made porting to the Motorola 68000 and Zilog Z8001/8002, from 1982 x86 on Intel. This was an application, inter alia, developed on the IBM - PC platform and on Commodore 900 possible on the later early versions of Linux. A version for use on the IBM PC platform was the summer of 1983 for about $ 500. Before the performance of IBM 's Unix - product on the market but was not error-free. Affordable competitors were still rare in the following years. On the part of the company's management was defined as a design guideline that no code of the emulated Unix at Bell Laboratories could be used, which was reviewed at several visits by Dennis Ritchie. So the Coherent C compiler C compiler was written by Dave Conroy with the assembler DECUS. In the later litigation between SCO and IBM to the ownership of Unix these checks were used as an example of this is the production of a comparable Unix operating system without using the original code of the Bell Laboratories possible.
Csd
The first C source code debugger
Let's C
The first low-cost professional C compiler for the IBM PC
Mark Williams C for the Atari ST
Mark Williams C for the Atari ST, the professional C compiler for the Atari ST replaced the Alcyon C compiler in the official, self- distributed by Atari software development kit. The product of the manufacturer, who had become known in the minicomputer scene through its IBM PCs distributed with source code debugger, C- compiler, was not available for the Atari platform before June 1986. In a comparison test, a relatively error -free and complete command-line operation, the achievable via a free phone number customer service and the source code debugger also included in the package as well as the installer has emerged over other products. The documentation was considered comprehensive and adequate, but was linguistically could be improved. The package did not support the work in the graphic interface GEM, the created source code was but useable on other platforms such as IBM PC or VAX with the same C compiler products of the manufacturer. The package included a MicroEmacs as editor, the working environment was comparable to Unix machines and small projects could be compiled directly from disk. The version 1.0/1.1 released in 1986, version 2 was released in 1987. Starting in June 1988, Version 2.1 was distributed in Germany, a version 3.0 was in October 1988 on the market, but was not compatible with ANSI -C.
C compiler for many different platforms
Platforms on which C was otherwise not accessible or not practical, such as the DEC Rainbow