| 摘要 |
PURPOSE:To reduce the number of program steps, by storing the result of zero checking of the result value of a logical operation other than the logical operation indicated clearly by a program. CONSTITUTION:When the exclusive OR operation of data in a work register (WR)6 and a literal value in a control storage data register (CSDR)2 is performed at a logical operation circuit 9 having an EOR function, an arithmetic result is set at the WR6 via an arithmetic result register 16. At this time, a decided result of all '0's that is the arithmetic result of the exclusive OR operation is set at an FF19, and also, the arithmetic result of a logical product not being indicated in the program, and the decided result of all '0's that is, the arithmetic result of the data in which an input data on one side is inverted, are set respectively at the FF18 and 19. Therefore, it can be said that plural logical operations are performed simultaneously from the standpoint of the program.
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