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Commercial Operating System

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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]

Implementations

The Commercial Operating System was implemented to run on hardware from the PDP-8 & 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.[3]

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.[4]

References

  1. ^ Binh Nguyen. Linux Dictionary. p. 424., citing "QUECID".
  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.
  3. ^ the other was WPS-8.
  4. ^ "Datasystem 350 Turnkey Payroll Package". Computerworld. July 30, 1975.