Central processor unit for executing instructions with a special operand specifier
CA 1114518 A · Owner: Digital Equipment Corporation · Inventors: Rodgers, David P.; Lary, Richard F.; Rothman, Steven H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Application of, William D. Strecker, Thomas N. Hastings Richard F. Lary, David P. Rodgers and Steven H. Rothman Relating to, CENTRAL PROCESSOR UNIT FOR EXECUTING INSTRUCTIONS WITH A SPECIAL OPERAND SPECIFIER Abstract of the Disclosure. A digital data processing system with a central processor for responding to diverse instructions characterized by having variable length. Each instruction includes an operation code. Certain instructions also include one or more operand specifiers. Each operand specifier can comprise one or more data bytes, Each instruction passes to an instruction buffer. Control circuitry in the central processor decodes the operation code and, in succession, each operand …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted December 15, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 15, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.