Patents by Inventor David Mothersole

David Mothersole 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).

  • Patent number: 5021991
    Abstract: A system for interfacing a Processor to a Coprocessor using standard bus cycles. The Processor, upon encountering in its instruction stream an instruction having a particular Operation word format, will transfer a Command word following the Operation word to a particular Coprocessor designated by a Coprocessor Identity field in the Operation word. Upon decoding the Command word, the Coprocessor will respond with any of a set of response primitives which define functions which the Coprocessor requires to Processor to perform in support of the Command by the Coprocessor. The interface provides for all functions which the Coprocessor may require, including selective vectoring to appropriate exception handlers.
    Type: Grant
    Filed: September 18, 1987
    Date of Patent: June 4, 1991
    Assignee: Motorola, Inc.
    Inventors: Douglas B. MacGregor, John Zolnowsky, David Mothersole
  • Patent number: 4994961
    Abstract: A system for interfacing a Processor to a Coprocessor using standard bus cycles. The Processor, upon encountering in its instruction stream an instruction having a particular Operation word format, will transfer a Command word following the Operation word to a particular Coprocessor designated by a Coprocessor Identity field in the Operation word. Upon decoding the Command word, the Coprocessor will respond with any of a set of response primitives which define functions which the Coprocessor requires to Processor to perform in support of the Command by the Coprocessor. The interface provides for all functions which the Coprocessor may require, including selective vectoring to appropriate exception handlers.
    Type: Grant
    Filed: September 18, 1987
    Date of Patent: February 19, 1991
    Assignee: Motorola, Inc.
    Inventors: Douglas B. MacGregor, John Zolnowsky, David Mothersole
  • Patent number: 4914578
    Abstract: A system for interfacing a Processor to a Coprocessor using standard bus cycles. The Processor, upon encountering in its instruction stream an instruction having a particular Operation word format, will transfer a Command word following the Operation word to a particular Coprocessor designated by a Coprocessor Identity field in the Operation word. Upon decoding the Command word, the Coprocessor will respond with any of a set of response primitives which define functions which the Coprocessor requires to Processor to perform in support of the Command by the Coprocessor. The interface provides for all functions which the Coprocessor may require, including selective vectoring to appropriate exception handlers.
    Type: Grant
    Filed: January 31, 1986
    Date of Patent: April 3, 1990
    Assignee: Motorola, Inc.
    Inventors: Douglas B. MacGregor, David Mothersole, John Zolnowsky
  • Patent number: 4821231
    Abstract: A system for interfacing a Processor to a Coprocessor using standard bus cycles. The Processor, upon encountering in its instruction stream an instruction having a particular Operation word format, will transfer a Command word following the Operation word to a particular Coprocessor designated by a Coprocessor Identity field in the Operation word, Upon decoding the Command word, the Coprocessor will respond with any of a set of response primitives whcih define functions which the Coprocessor requires to Processor to perform in support of the Command by the Coprocessor. The interface provides for all functions which the Coprocessor may require, including selective vectoring to appropriate exception handlers.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: April 11, 1989
    Assignee: Motorola, Inc.
    Inventors: Michael Cruess, David Mothersole, John Zolnowsky, Douglas B. MacGregor
  • Patent number: 4811274
    Abstract: A system for interfacing a Processor to a Coprocessor using standard bus cycles. The Processor, upon encountering in its instruction stream an instruction having a particular Operation word format, will transfer a Command word following the Operation word to a particular Coprocessor designated by a Coprocessor Identity field in the Operation word. Upon decoding the Command word, the Coprocessor will respond with any of a set of response primitives which define functions which the Coprocessor requires to Processor to perform in support of the Command by the Coprocessor. The interface provides for all functions which the Coprocessor may require, including selective vectoring to appropriate exception handlers.
    Type: Grant
    Filed: September 14, 1987
    Date of Patent: March 7, 1989
    Assignee: Motorola, Inc.
    Inventors: Michael Cruess, David Mothersole, John Zolnowsky, Douglas B. MacGregor
  • Patent number: 4758978
    Abstract: A system for interfacing a Processor to a Coprocessor using standard bus cycles. The Processor, upon encountering in its instruction stream an instruction having a particular Operation word format, will transfer a Command word following the operation word to a particular Coprocessor designated by a Coprocessor Identity field in the Operation word. Upon decoding the Command word, the Coprocessor will respond with any of a set of response primitives which define functions which the Coprocessor requires the Processor to perform in support of the Command by the Coprocessor. The interface provides for all functions which the Coprocessor may require, including selective vectoring to appropriate exception handlers.
    Type: Grant
    Filed: September 18, 1986
    Date of Patent: July 19, 1988
    Assignee: Motorola, Inc.
    Inventors: Michael Cruess, David Mothersole, John Zolnowsky, Douglas B. MacGregor
  • Patent number: 4750110
    Abstract: A system for interfacing a Processor to a Coprocessor using standard bus cycles. The processor, upon encountering in its instruction stream an instruction having a particular Operation word format, will transfer a Command word following the Operation word to a particular Coprocessor designated by a Coprocessor Identity field in the Operation word. Upon decoding the Command word, the Coprocessor will respond with any of a set of response primitives which define functions which the Coprocessor requires the Processor to perform in support of the Command by the Coprocessor. The interface provides for all functions which the Coprocessor may require, including selective vectoring to appropriate exception handlers.
    Type: Grant
    Filed: April 18, 1983
    Date of Patent: June 7, 1988
    Assignee: Motorola, Inc.
    Inventors: David Mothersole, John Zolnowsky, Douglas B. MacGregor
  • Patent number: 4731736
    Abstract: A system for interfacing a Processor to a Coprocessor using standard bus cycles. The Processor, upon encountering in its instruction stream an instruction having a particular Operation word format, will transfer a Command word following the Operation word to a particular Coprocessor designated by a Coprocessor Identity field in the Operation word. Upon decoding the Command word, the Coprocessor will respond with any of a set of response primitives which define functions which the Coprocessor requires to Processor to perform in support of the Command by the Coprocessor. The interface provides for all functions which the Coprocessor may require, including selective vectoring to appropriate exception handlers.
    Type: Grant
    Filed: September 18, 1986
    Date of Patent: March 15, 1988
    Assignee: Motorola, Inc.
    Inventors: David Mothersole, Douglas B. MacGregor, John Zolnowsky
  • Patent number: 4715013
    Abstract: A system for interfacing a processor to a Coprocessor using standard bus cycles. The processor, upon encountering in its instruction stream an instruction having a particular Operation word format, will transfer a Command word following the Operation word to a particular Coprocessor designated by a Coprocessor Identity field in the Operation word. Upon decoding the Command word, the Coprocessor will respond with any of a set of response primitives which define functions which the Coprocessor requires to Processor to perform in support of the Command by the Coprocessor. The interface provides for all functions which the Coprocessor may require, including selective vectoring to appropriate exception handlers.
    Type: Grant
    Filed: July 25, 1986
    Date of Patent: December 22, 1987
    Assignee: Motorola, Inc.
    Inventors: Douglas B. MacGregor, John Zolnowsky, David Mothersole