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:
Mar. 07, 1995
Filed:
Jul. 26, 1993
Scott D Walton, Boynton Beach, FL (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and system is provided for a computer system for testing base memory in which the computer system's operating system resides. The operating system is initially run out of the base memory in a first memory bank. A mapping scheme establishes a correspondence between physical addresses in the first memory bank and in a second memory bank, and logical addresses which map to the physical addresses in the first and second memory banks. The contents of the base memory from the first memory bank are copied to the second memory bank, and operation of the operating system from the base memory in the first memory bank is switched to the base memory copied into the second memory bank. After a memory test is performed on the first memory bank, the copied contents of the base memory are re-copied from the second memory bank back into the first memory bank, and operation of the operating system is switched back to the re-copied base memory in the first memory bank.