Burroughs B20

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Burroughs B20
Burroughs Corporation logo 1980s.svg
CTOS-B25.JPG
A Burroughs B25 computer running BTOS
Developer Convergent Technologies
Type 16-bit professional
Release dateMay 1982;40 years ago (May 1982)
Operating system BTOS
CPU Intel 8086
Memory640K
Display CRT

The B20 is a line of microcomputers from Burroughs Corporation. The systems, introduced in May 1982, consist of two models: the B21 and the B22. [1] The B21 models are rebadged Convergent Technologies AWS workstations incorporating an Intel 8086 CPU. The B22 models are rebadged IWS workstations. They run the BTOS operating system, which is a version of Convergent's CTOS, as well as CP/M and MS-DOS. [2]

Systems support up to 640 KB of RAM. The B22 included a mass storage unit with a capacity of up to 60 MB. [2]

The Burroughs B25, a rebadged Convergent NGEN system with an Intel 80186 CPU, was introduced in 1983. [3] The B26 was introduced in 1984, and a B28 system followed in 1985 based on the Intel 80286 CPU.

There is also an 80186-based B27 which used an "F-bus" rather than the "X-bus" used on the B25/B26/B28.

A cluster only (no storage) 80186-based B24 was later released and commonly used by bank tellers.

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References

  1. "Burroughs B22". Rhode Island Computer Museum. Retrieved Jan 10, 2020.
  2. 1 2 "(advertisement)". Computerworld. March 28, 1983. Retrieved Jan 10, 2020.
  3. "Convergent Technologies AWS NGEN Workstation". Centre for Computing History. Retrieved Jan 10, 2020.