| 摘要 |
PURPOSE:To shorten a period of time between an instruction start time point and a transfer action start time point by securing such a constitution where an instruction supply part detects the 1st and 2nd conditions independently of the working of an instruction executing part and after generation of the 1st and 2nd addresses and both conditions are informed to the instruction executing part after generation of the 1st and 2nd lengths. CONSTITUTION:When a transfer instruction is carried out, an instruction supply part detects a 1st condition where a 2nd address Y2 is less then a 1st address Y1 and a 2nd condition where the address Y2 is larger than the sum of the address Y1 and a prescribed constant N independently of the working of an instruction executing part and after generation of both addresses Y1 and Y2. These two detected conditions are informed to the instruction executing part after generation of the 1st and 2nd lengths L1 and L2. Thus it is possible to shorten a period of time between an instruction start time point and a transfer action start point and the performance of a transfer instruction is improved.
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