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:
Sep. 20, 1977
Filed:
Apr. 30, 1976
Donall Garraid Bourke, Boca Raton, FL (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Lookahead circuits for an address relocation translator containing stacks of segmentation registers (SR's), each of which may be loaded with an assigned address of a physical block in a main memory. An additional pair of bit positions are provided with each SR to receive lookahead bits from decoder loading circuits which decode a physical address being loaded into the SR to indicate the storage unit containing the addressed block. During each subsequent address translation, the loaded lookahead bits are outgated while the block address is being read from an SR. The lookahead bits are decoded for selecting the required storage unit component of the main memory, and a translator interface is switched to that unit. The lookahead bits are handled by parallel high-speed circuits which operate faster than the larger translation circuits handling the block address being read from the SR. As a result, the required storage unit is selected before a storage unit cycle is generated by the translator for accessing the addressed block.