Patents by Inventor Ian M. McCallion

Ian M. McCallion 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: 4736290
    Abstract: A microprocessor that has two operating modes for generating memory location addresses includes a processor 20 connected to a read-only memory 21, a random access memory 22, and an I/O unit 23 through control 25, data 26 and address 27 buses. A remapper unit 24 is connected in the address bus between the processor 20 and the read only memory and the random access memory so that when it is enabled by a signal from the I/O unit it can selectively change addresses generated by the processor and thus redirect the control of the microprocessor.
    Type: Grant
    Filed: June 13, 1986
    Date of Patent: April 5, 1988
    Assignee: International Business Machines Corporation
    Inventor: Ian M. McCallion