The vector product-sum operation circuit

摘要

PROBLEM TO BE SOLVED: To provide a vector product-sum operation circuit capable of two operand operations easily without rewriting each factor of a vector register.;SOLUTION: Mask registers 31-33 store mask bits indicating validity/invalidity of data every operand. Control circuits 11-13 generate selection signals from the operation mode and mask bits accompanying each operand. Function selectors 1-3 select either operand data or any one of specified value ("0" or "1") preset with each operand an input according to the selection signals from the control circuits 11-13, and outputs it to the respective product-sum operation circuits.;COPYRIGHT: (C)2007,JPO&INPIT