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. 14, 1993
Filed:
Nov. 07, 1989
Rashid N Khan, Cupertino, CA (US);
Stuart Auvinen, Santa Cruz, CA (US);
Funkai Liu, Sunnyvale, CA (US);
Chips and Technologies, Inc., San Jose, CA (US);
Abstract
A method and apparatus which puts a cartridge memory, such as a cartridge ROM, into the EMS memory space. A register value is set to indicate that the cartridge memory is present. This value is provided to enable a logic circuit which does the address transformation needed for EMS and generates a chip select signal for the cartridge memory. The chip select signal is produced upon the detection of an address directed to the cartridge memory. A register stores the address of the cartridge memory. Since the memory address of the cartridge memory can be varied, the location of the cartridge can be placed where it is most convenient for the particular memory structure of a system.