| 摘要 |
PURPOSE:To control the busy state of a bank with simple constitution by forming a means for detecting overlap between a request bank group and a bank group in busy registration. CONSTITUTION:A block reading request sent from a storage control device 4 through an interface 101 is controlled by a request receiving circuit 10 so as to be checked at its bank busy every two banks (M=2) per cycle from bank ''0'' (A=0) and M-2 and A=0 are set up in a check register 11 at timing T=0. Since there is no using bank at the timing T=0 and T=1 in the shown example, ''0'' is set up in the bank number informtion N1-N4 of all the bank registeration register 21-24, so that no coincidence signal is outputted from the outputs of comparators 21-24. A storage access circuit 12 can send a reading request to the banks ''0'' and ''1'' through pathes 104, 105 at the succeeding timing T=2 and T=3 on the basis of address information 112 and bank information 113. |
