| 摘要 |
<P>PROBLEM TO BE SOLVED: To increase an error detection effect. <P>SOLUTION: An arithmetic unit 1 includes an instruction control section 100, a first operant control section 200, a second operand control section 300, an arithmetic section 400, an NOP detection section 500, and an error detection section 600. According to control signals outputted by the NOP detection section 500, the instruction control section 100, the first operand control section 200, and the second operand control section 300 output input signals received in a clock cycle immediately before to the arithmetic section 400 as test signals. The error detection section 600 compares arithmetic result data obtained by the arithmetic section 400 with test arithmetic result data, and discriminates whether or not an error has occurred. <P>COPYRIGHT: (C)2013,JPO&INPIT |
