From the collection, a scannedin computerrelated document. Chronological record and notes from a project to create a functional emulator for the burroughs b5500 computer system. 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. I try to use not more than shift, mask and additionsubtraction to implement b5500 arithmetic. Starting the project the burroughs b5500 was an innovative computer system. The emulator files implement only the hardware portion of a b5500 system. Burroughs smartsource expert capi emulator software. To make the emulator useful, you also need the system software developed by burroughs. View and download burroughs smartsource series installation and operation manual online. I have been checking into the dtcyber emulator and am confused as to why ibms pre 1981 oss are considered legal for hobbyist but. Burroughs b5500, icl1900, sel32, ibm 360, ibm 7000 and dec pdp10 ka10ki10kl10, pdp6 simulators for simh rcornwellsims. A burroughs b5500 emulation in c this is absolute work in progress. Evolution of burroughs stack architecture mainframe computers. Note that this move affects only the opensource project site.
The main goal of this project is creation of a web browserbased emulator for the b5500. The burroughs large systems group designed large mainframes using stack machine instruction sets with dense syllables and 48bit data words. All further emulator development will be posted to the new github site. Burroughs b5500, icl1900, sel32, ibm 360, ibm 7000 and dec. Webbased emulator and operating environment for the burroughs 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. 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. You must download at least the system tape image in order to set up the emulator in your browser. It was the first computer to use the stack as its only means of accessing data. The b500055005700 stack architecture computers made up the large system offering. Many of the files haven been transcribed from listings or scans of listings. In the 1960s burroughs small and medium systems offering were the.
Focus is on using 64 bit unsigned long long for the b5500 words. Burroughs became part of unisys corporation in 1986. Introducing the retro205 emulator the burroughs 205 and 220 blog. Also mentions bipco, nixie, and burroughs mobile datavan with b200 on board. It was optimized for running algol 60 extremely well, using simple compilers.
Unisys still owns and maintains s the b5500 system software. The burroughs 5500 was a unique machine, first introduced in 1961 as the b5000. Work starts in the emulator subdirectory, where i check some possible implementation variants. Multiple windows on the screen are used to display the panels and peripheral devices of the system. Emulating the burroughs b5500 using a modern webbrowser and javascript. Contributions of new material and corrections to existing material are most welcome. 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.