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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Wells; Douglas M.
Address:
Chapel Hill, NC
No. of patents:
10
Patents:












Patent Number Title Of Patent Date Issued
4633406 Digital data processing system method for making a general call December 30, 1986
A data processing system having a flexible internal structure, protected from and effectively invisible to users, with multilevel control and stack mechanism and capability of performing multiple, concurrent operations, and providing a flexible, simplified interface to users. The system
4554626 Digital data processing system November 19, 1985
A digital data processing system using process synchronization techniques which comprise processing await logic for suspending the execution of a program controlled by a process, virtual processor await logic for performing an await operation at the virtual processor level and for te
4532586 Digital data processing system with tripartite description-based addressing multi-level microcod July 30, 1985
A digital computer system in which data storage is referred to by a descriptor comprising an object number denoting a variable-length block of storage, an offset indicating how far into that block a desired data item begins, and a length field denoting the length of the desired data item
4498132 Data processing system using object-based information and a protection scheme for determining ac February 5, 1985
A digital data processing system has a memory organized into objects containing at least operands and instructions. Each object is identified by a unique and permanent identifier code which identifies the data processing system and the object. The system further uses multilevel micro
4498131 Data processing system having addressing mechanisms for processing object-based information and February 5, 1985
A digital data processing system has a memory organized into objects containing at least operands and instructions. Each object is identified by a unique and permanent identifier code which identifies the data processing system and the object. The system utilizes unique addressing me
4493027 Method of performing a call operation in a digital data processing system having microcode call January 8, 1985
A method for executing call and return instructions in a digital computer system operating under control of microcode. The microcode may specify calls to and returns from sequences of microinstructions. A call microinstruction sequence corresponds to the call instruction. The call mi
4480306 Digital data processing system using unique ALU register files and micro-instruction stacks October 30, 1984
A data processing system having a flexible internal structure, protected from and effectively invisible to users, with multilevel control and stack mechanisms and capability of performing multiple, concurrent operations, and providing a flexible, simplified interface to users. The system
4455603 System for resolving pointers in a digital data processing system June 19, 1984
Systems and method for resolving unresolved pointers in digital computer systems. In unresolved pointers, addresses are represented by means of data items from which the addresses may be derived. The unresolved pointer is resolved when the represented address is derived from the data ite
4454579 System for performing call and return operations June 12, 1984
An improved system for performing call and return operations in a computer system in which every call and return operation changes the program counter and the frame pointer but some call and return operations change other state. Included in the state which may change in the computer syst
4445173 Improved system for saving and restoring state in call and return operations April 24, 1984
An improved system for saving state during a call operation and restoring state during a return operation in a computer system in which different call and return operations require the saving and restoring of different amounts of state. The components of the system are call instructions










 
 
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