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:
Jun. 02, 1998
Filed:
Dec. 29, 1995
Mark A Yarch, Chandler, AZ (US);
Byron R Gillespie, Phoenix, AZ (US);
Marc A Goldschmidt, Tempe, AZ (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A computer system is provided including a local memory, a local bus coupled to the local memory, a peripheral bus and a direct memory access (DMA) controller. The DMA controller performs DMA transfers of data between the local bus and the peripheral bus. The DMA includes a DMA queue for storing data to be transferred and a bus ownership status circuit for determining bus ownership status of the DMA controller. The DMA controller further includes a local bus interface circuit coupled to the DMA queue and to the status circuit for halting the transfer of data from the local bus to the DMA queue without relinquishing DMA ownership over the local bus when the DMA queue is full and the status circuit indicates that the DMA controller has ownership over both the peripheral bus and the local bus.