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. 16, 2000
Filed:
Mar. 26, 1998
Curtis Priem, Fremont, CA (US);
David S Rosenthal, Palo Alto, CA (US);
Nvidia Corporation, Santa Clara, CA (US);
Abstract
Apparatus and a method by which the flow of DMA-transferable data from an application program to an input/output device using a direct memory access circuit may be halted when the device is unable to respond to DMA-transferable data sent to it. The apparatus includes circuitry for ascertaining whether the input/output device is able to respond to DMA-transferable data transferred to the input/output device, a circuit for storing the DMA-transferable data transferred to the input/output device to which the input/output device is unable to respond, and circuitry for generating a signal to disable immediately the flow of DMA-transferable data to the input/output device and an interrupt to assure that the DMA-transferable data is handled in an expeditious manner.