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:
Jan. 04, 1994
Filed:
Apr. 09, 1991
Lowell D McCulley, Glendale, AZ (US);
Russell W Guenthner, Glendale, AZ (US);
Clinton B Eckard, Glendale, AZ (US);
Leonard Rabins, Scottsdale, AZ (US);
William A Shelly, Phoenix, AZ (US);
Ronald E Lange, Glendale, AZ (US);
David S Edwards, Phoenix, AZ (US);
Bull HN Information Systems Inc., Billerica, MA (US);
Abstract
In order to gather, store temporarily and deliver (if needed) central processor safestore information, a multiphase clock is employed to capture (one full clock cycle behind) the safestore information which typically includes all software visible registers in all (or selected) data manipulation chips of the CPU by routing the safestore information through temporary storage (under the influence of the multiphase clock) in a cache data array and into a special purpose XRAM module. Thus, upon the sensing of a fault, valid safestore information is available in the XRAM for analysis and, if appropriate, resumption of operation at a sequential point just previous to that at which the fault occurred.