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:
May. 31, 1994
Filed:
Jan. 10, 1992
Applicant:
Inventor:
Stephen H Chan, Sunnyvale, CA (US);
Assignee:
Zilog, Inc., Campbell, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395700 ; 395775 ;
Abstract
A method and apparatus for using multiple program counters to reduce the latency time of a computer in response to an interrupt or subroutine call using a memory with multiple memory locations for storing the multiple program counters and control means in order to choose which one of the memory locations is used as a current program counter. Additionally, the use of a memory location to store the starting address of the interrupt subroutine is also disclosed.