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:
Dec. 25, 1990
Filed:
May. 14, 1987
David K Morgan, Hopkinton, MA (US);
Digital Equipment Corporation, Maynard, MA (US);
Abstract
In a memory module, signature data identifying the configuration of memory in that module is multiplexed onto a general memory data bus along with memory data normally transferred during memory access operations. A plurality of such memory modules can be combined in an automatic sizing memory system using a configuration status register to store configuration data for each of the memory modules. The configuration status register can include several independent status registers, each corresponding to a different memory module. Each of the status registers can contain a base address identifying the starting address of each of the modules. Elements in the configuration status register can then compare the addresses received from a central processor unit to the base address data in each of the status registers to select the memory module containing the location corresponding to each address. The status register can also contain validity and error indicators.