Parallel string processor and method for a minicomputer

Details Parallel string processor and method for a minicomputer Parallel string processor and method for a minicomputer

1990-02-12

1991-12-17

Shaw, Dale M.

Boots, shoes, and leggings

3401462, G06F 700, G06F 1500, G06F 702, G05B 100

Patent

active

050738640

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., control character) in the data word that has the selected predetermined characteristic. A number of different operations can be performed based upon the output of the circuit to accomplish in one instruction operations that previously required a large number of instruments.

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