I have been checking into the dtcyber emulator and am confused as to why ibms pre 1981 oss are considered legal for hobbyist but. The b500055005700 stack architecture computers made up the large system offering. It can be downloaded by searching for clearpath mcp express on the web. Evolution of burroughs stack architecture mainframe computers. Burroughs b5500 emulator hosting site this site hosts the current version of the retro b5500 emulator, an implementation of the legendary burroughs b5500 that runs in a web browser. The emulator files implement only the hardware portion of a b5500 system. Contributions of new material and corrections to existing material are most welcome. Multiple windows on the screen are used to display the panels and peripheral devices of the system. A burroughs b5500 emulation in c this is absolute work in progress. The burroughs large systems group designed large mainframes using stack machine instruction sets with dense syllables and 48bit data words. It was the first computer to use the stack as its only means of accessing data. Emulating the burroughs b5500 using a modern webbrowser and javascript.
To make the emulator useful, you also need the system software developed by burroughs. Burroughs b5500, icl1900, sel32, ibm 360, ibm 7000 and dec pdp10 ka10ki10kl10, pdp6 simulators for simh rcornwellsims. From the collection, a scannedin computerrelated document. Unisys still owns and maintains s the b5500 system software. It was optimized for running algol 60 extremely well, using simple compilers. Chronological record and notes from a project to create a functional emulator for the burroughs b5500 computer system. That b5500 emulator is now functionally complete if not quite. All further emulator development will be posted to the new github site.
Note that this move affects only the opensource project site. Released first as the b5000 in 1962 and then slightly updated to the b5500 in 1964, its design was a radical departure from other commercial systems of the day. Film quality is dark in parts and efforts to increase quality brought it. I try to use not more than shift, mask and additionsubtraction to implement b5500 arithmetic. The main goal of this project is creation of a web browserbased emulator for the b5500. Nigel and i are very pleased to report that three magnetic tapes in the collection of the computer history museum have been successfully read, and the resulting image files made available to several of us in the community working on burroughs b5500 emulators. The burroughs 5500 was a unique machine, first introduced in 1961 as the b5000. Burroughs smartsource expert capi emulator software. Many of the files haven been transcribed from listings or scans of listings. Burroughs became part of unisys corporation in 1986.
View and download burroughs smartsource series installation and operation manual online. Also mentions bipco, nixie, and burroughs mobile datavan with b200 on board. As with my earlier retro205 emulator for the 205 and retro b5500 emulator for the burroughs b5500, the retro220 emulator is written in javascript and runs in a standard web browser. Burroughs smartsource expert capi emulator software burroughs smartsource expert capi emulator software. Webbased emulator and operating environment for the burroughs b5500. Work starts in the emulator subdirectory, where i check some possible implementation variants. In the 1960s burroughs small and medium systems offering were the. To set up the simulator you will need to download the simulator, i file.
The b5500 software project maintains source code and software artifacts for the burroughs b5500 computer system, a 1960s mainframe system designed for highlevel languages, and specifically algol 60. The b5500 was the foundation for the burroughs b6x007x00a series systems, which are still produced and sold today as unisys clearpath mcp systems. You must download at least the system tape image in order to set up the emulator in your browser. Introducing the retro205 emulator the burroughs 205 and 220 blog. Starting the project the burroughs b5500 was an innovative computer system. The burroughs b5500 was an innovative computer system. Burroughs b5500, icl1900, sel32, ibm 360, ibm 7000 and dec. B5500 home page the home page from which you can start the emulator and open the b5500 operations console.
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