Hardware for extending microprocessor addressing capability
CA 1138121 A · Owner: Honeywell Information Systems Inc. · Inventors: Miller, Robert C.; Holtey, Thomas O.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A paging apparatus for improved mapping of virtual addresses to real addresses, addressing physical devices coupled to various communication buses, and controlling flow of data. By means of an eight-bit addressing apparatus activated for certain instructions which normally can address only 256 locations an, additional 512 locations can typically be addressed by generating control signals to modify a virtual address into a real address capable of addressing the additional locations. Additionally the, apparatus can control flow of data by enabling or disabling data control apparatus.
Read the whole patent
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 21, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 21, 1999.
- 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.