The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 1986
Filed:
Sep. 29, 1983
Robert W Horst, Cupertino, CA (US);
Richard L Harris, San Jose, CA (US);
Tandem Computers Incorporated, Cupertino, CA (US);
Abstract
Hardware for performing microcode branching in a pipeline central processing unit allows for two different speeds of branches which can be used by microcode and includes flexibility to optionally inhibit lines of microcode which are in the pipeline when a branch has been sensed. A default branch path can be taken for a test result not yet available and can be replaced with a correct branch target during a clock pause if the test result is false. A return address stack is provided with decoupling loading and pushing to accommodate the two branching speeds. The microcode can specify loading the return address stack with a literal or register value to allow vectored branching and return to a desired line after a delayed call.