| 摘要 |
PROBLEM TO BE SOLVED: To provide an elastic storage circuit reducing a circuit scale and suppressing the occasion frequency of initialization by simplifying a circuit detecting a difference between a reading address and a writing address. SOLUTION: The circuit is provided with a reading address decoding part 13 setting a reference value address B to be a reading address and detecting this address, a writing address decoding part 14 detecting the distance difference of an address between with the reference value address B as an initializing address value B±a and address values in a prescribed range adjacent to the both external sides of this initializing address value as stoppage controlling address values by a writing adders value, and writing and reading stoppage signal generating circuits 18 and 19 generating a prescribed control signal by a stoppage controlling address value adjacent to the both external sides of the initializing address value and executing prescribed control for stopping reading and writing. In addition the part 14 detects and output by means of three logic circuits.
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