Patents by Inventor Stanley E. Cox

Stanley E. Cox has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus for providing DMA functionality to devices located in a bus expansion chassis
    Patent number: 5335329
    Abstract: An expansion system for a bus-architecture system is disclosed, particularly for an SBus-compatible system. The expansion system includes a host expansion board which fits into one of the expansion slots connected to the SBus, a cable connected to the host expansion board, and an expansion chassis connected to the cable. A memory management unit is included in the host expansion board, for mapping physical addresses on said SBus into addresses of add-on functions installed in the expansion chassis. This mapping allows for varying memory size functions to be installed into a single expansion slot. The MMU also copies the ID PROMs from each of the add-on functions into RAM on the host expansion board, so that such expansion is transparent to the driver software.
    Type: Grant
    Filed: July 18, 1991
    Date of Patent: August 2, 1994
    Assignee: Texas Microsystems, Inc.
    Inventors: Stanley E. Cox, Mark E. Ish