| 摘要 |
<p>PURPOSE:To facilitate abort control and to improve the utilizing efficiency of a storage means by identifying and storing priority from a header of information and receiving the priority of the information from an identification means, thereby applying storage or abort control of the information. CONSTITUTION:Upon the receipt of information with a header added thereto, an identification means 18 identifies whether the received information is priority information or non-priority information according to the header. If a storage means 20 has an idle area, a control means 10 stores the received information to the storage means 20 independently of the priority information or non-priority information. In the case of storing the non-priority information, an abort address generating means 16 stores the stored address. When the priority information is received while the information of the number enabling the storage of addresses is stored in the storage means 20, the control means 10 stores the priority information to the storage address of the non-priority information stored in the abort address generating means 16. Thus, it is possible to attain the abort control with a simple circuit constitution and since one logical and physical storage means 20 applies the abort control, the utilizing efficiency of the storage means is excellent.</p> |
