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:
May. 30, 1995
Filed:
Jun. 12, 1991
Robert D Maher, III, Carrollton, TX (US);
John Eitrheim, Garland, TX (US);
Fred Dunlap, Dallas, TX (US);
Thomas B Brightman, Plano, TX (US);
Cyrix Corporation, Richardson, TX (US);
Abstract
A coprocessor 18 comprises a bus controller 24 which further comprises a primary bus controller 28 and a secondary bus controller 30 that drive a floating point processor core 26. The primary bus controller 28 comprises a memory mapped bus interface 32 for processing memory mapped format instructions and an I/O bus interface 34 for processing conventional I/O format instructions. The primary bus controller 28 remains essentially transparent for execution of I/O format instructions and translates memory mapped format instructions into sequential bus cycles compatible to an I/O bus interface for processing conventional I/O format instructions, and for execution by the floating point processor core.