Software:Commercial Operating System (COS)

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Commercial Operating System (COS)
DeveloperDigital Equipment Corporation
Available inEnglish
PlatformsPDP-8, PDP-11
LicenseProprietary

COS-3xx (Commercial Operating System) was the name used by Digital Equipment Corporation for a family of operating systems. [1]

They supported the use of DIBOL, a programming language combining features of BASIC, FORTRAN and COBOL.[2] COS also supported RPG (Report Program Generator)[3]

Implementations

The Commercial Operating System was implemented to run on hardware from the PDP-8[4]:pp.2-19 thru 2-20 & PDP-11 family.

COS-310

COS-310 was developed for the PDP-8 to provide an operating environment for DIBOL. A COS-310 system was purchased as a package which included a desk, VT-52 VDT (Video Display Tube), and a pair of eight inch floppy drives. Optionally you could purchase one or more 2.5 MB hard drives that had removable media. COS-310 was one of the operating systems available on the DECmate II.[5][6]

Unlike under TSS-8, where each user had only a 4K virtual machine, on COS, each user had (up to) a virtual 32K.[7]

COS-350

COS-350 was developed to support the PDP-11 Port of DIBOL, and was the focus for some vendors of turnkey software packages.[8]

Pre-COS-350, a PDP 11/05 single-user batch-oriented implementation was released; the multi-user PDP 11/10-based COS came about 4 years later.[3] The much more powerful PDP-11/34 "added significant configuration flexibility and expansion capability.":p.69

See also

References

  1. ↑ Binh Nguyen. Linux Dictionary. p. 424. https://books.google.com/books?id=vdZWBQAAQBAJ. , citing "QUECID". http://www.tldp.org/LDP/Linux-Dictionary/html/index.html. 
  2. ↑ "Dibol Under COS: The series operates under the Commercial Operating System (COS) 350, which provides timesharing with a high-speed response." "DIBOL under COS". Computerworld. July 30, 1975. https://books.google.com/books?id=jT2fQqJplN8C. 
  3. ↑ 3.0 3.1 DIGITAL EQUIPMENT CORPORATION - Nineteen Fifty-Seven To The Present. Digital Equipment Corporation. 1975. http://s3data.computerhistory.org/pdp-1/dec.digital_1957_to_the_present_(1978).1957-1978.102630349.pdf. 
  4. ↑ in PDP 8/e Small Computer Handbook. Digital Equipment Corporation. 1973. 
  5. ↑ the other was WPS-8.
  6. ↑ There was a product named COS-300, and some DEC manuals are named with both 300 & 310.
  7. ↑ "Multiple users of a Digital Equipment Corp. PDP-8 can each have a virtual machine with 32K words of memory running under.. COS-300.. "COS-300". Computerworld. August 15, 1977. https://books.google.com/books?id=p5mHeKTvE5sC. 
  8. ↑ "Datasystem 350 Turnkey Payroll Package". Computerworld. July 30, 1975. https://books.google.com/books?id=jT2fQqJplN8C. 




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