MULTIPORT RANDOM ACCESS MEMORY

PROBLEM TO BE SOLVED: To provide a high-performance memory system that reduces memory access waiting time. SOLUTION: The memory system has a plurality of memory banks (11 to 14 and 41 to 44), a plurality of buses (35 to 37 and 65 to 67), and selecting mechanisms (105, 46, 47, 205, 15 and 16). The selecting mechanisms are connected with all of the memory banks (11 to 14 and 41 to 44) in the plurality of memory banks (11 to 14 and 41 to 44) and all of the buses (35 to 37 and 65 to 67) in the plurality of buses (35 to 37 and 65 to 67). In addition, the selecting mechanisms select either of the memory banks (11 to 14 and 41 to 44) from the plurality of memory banks (11 to 14 and 41 to 44) to connect it to either of the buses (35 to 37 and 65 to 67) from the plurality of the buses (35 to 37 and 65 to 67). COPYRIGHT: (C)2006,JPO&NCIPI