Abstract: A processor is disclosed for use in a computer system for comparing a number of bytes simultaneously in order to locate a control character in a string of data. The processor includes a register for holding the data bytes, a register for storing the control characters, a comparison circuit for simultaneously comparing the bytes of the first register with the bytes of the second register, and a circuit for generating indicator bits when a match has been found between the two registers. Microcode instructions cause the system to branch to a predetermined memory location when the control character has been located and to branch to a second predetermined memory location when no control character is found in the data string. The parallel string processor includes a circuit which finds the indicator bits generated from the circuit which have a predetermined characteristic and thus identifies the position of a particular byte (e.g.
Abstract: A register architecture for a computer in which a plurality of banks of general purpose registers are used in the register files. Each of the multiple register banks is dedicated to a different user, with one of the register banks being dedicated to servicing interrupts and another of the register banks being dedicated to the operating system of the computer in which the register architecture is incorporated. Associated with each of the register banks is a smaller register bank of status registers in which information concerning the status of the computer is stored.
Type:
Grant
Filed:
February 27, 1990
Date of Patent:
September 17, 1991
Assignee:
Davin Computer Corporation
Inventors:
Angus McLagan, Gei-Jon Pao, Chong S. Un
Abstract: A processor is disclosed for use in a computer system for comparing a number of bytes simultaneously in order to locate a control character in a string of data. The processor includes a register for holding the data bytes, a register for storing the control characters, a comparison circuit for simultaneously comparing the bytes of the first register with the bytes of the second register, and a circuit for generating indicator bits when a match has been found between the two registers. Microcode instructions cause the system to branch to a predetermined memory location when the control character has been located and to branch to a second predetermined memory location when no control character is found in the data string.In another aspect, a parallel string processor for a minicomputer for searching portions of text or binary bit strings for the presence of desired words or bit strings.
Type:
Grant
Filed:
October 21, 1988
Date of Patent:
January 23, 1990
Assignee:
Davin Computer Corporation
Inventors:
David H. Methvin, Angus McLagan, Gei-Jon Pao, Chong S. Un