Phoenix secure core bios6/13/2023 ![]() Engineers read the BIOS source listings in the IBM PC Technical Reference Manual. To develop a legal BIOS, Phoenix used a clean room design. Clone manufacturers needed a legal, fully compatible BIOS. IBM sued companies that it claimed infringed IBM's copyright. Some, like Compaq, developed their own compatible ROM BIOS, but others violated copyright by directly copying the PC's BIOS from the IBM PC Technical Reference Manual. Siemens-Nixdorf Laptop from 1992 using Phoenix 80386 ROM BIOS PLUS Version 1.10.00Īfter the success of the IBM PC, many companies began making PC clones. These products only provided a small revenue stream to Phoenix during the early 1980s and the company did not significantly expand in size. Phoenix also developed C language libraries, called PForCe, along with Plink-86/Plink-86plus, overlay linkers, and Pfix-86, a windowed Debugger for DOS. Phoenix also provided PMate as a replacement for Edlin as the DOS file editor. ![]() Phoenix developed customized versions of 86-DOS (or sometimes called PDOS for Phoenix DOS) for various microprocessor platforms. In this same time period Phoenix purchased a non-exclusive license for Seattle Computer Products 86-DOS. During 1980–1981, they rented office space for the first official Phoenix location at 151 Franklin Street, Boston, Massachusetts. ![]() Neil hired Dave Hirschman, a former Xitan employee. In 1979, Neil Colvin formed what was then called Phoenix Software Associates after his prior employer, Xitan, went out of business.
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