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. 06, 1984
Filed:
Jan. 19, 1981
George L Brantingham, Tourrettes sur Loup, FR;
Ashok H Someshwar, Austin, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A data processing system having a large slow main memory and having a small fast memory is disclosed with means for allowing slow memory calls to fast memory routines and means for allowing returns from programs executing in the fast memory so as to return to program execution in the slow main memory. Also disclosed is circuitry for selectively deactivating the main memory and for selectively activating the fast memory responsive to particular ones of data signals output from the main memory, and means for selectively deactivating the fast memory and for selectively deactivating the main memory responsive to predefined ones of data signals output from the fast memory, thereby allowing program calls embedded in the slow main memory to transfer execution control to the fast memory, and providing retransfer of execution control from the fast memory to the slow main memory in response to a RETURN code embedded in the fast memory. Thus, memory size and speeds may be selectively ratioed to obtain higher overall data processing system throughput.