PRIORITY READ-OUT SYSTEM

摘要

PROBLEM TO BE SOLVED: To prevent entire memory capacity from being proportionally increased when the number of priority classes is increased, as conventionally since a FIFO for storing input data is provided for each priority class. SOLUTION: The addresses of data written in a data storage part 41 and written while being chained by a valid data area chain wiring means M1, and the data stored in the data storage part 41 are read from the highest priority class in the order of this chain by a read control means M2. Thus, since it is not necessary to provide the data storage part for each priority class, the entire memory capacity can be reduced.