| 摘要 |
PURPOSE:To control the rate of the use of a queue storage by preventing the overflow of the queue storage in holding data, by controlling the timing of data supply to an arithmetic device in a control state. CONSTITUTION:Respective rates of used words of N queues are set in registers 201-209 by every clock. At this time, counter 101 goes up by one in response to each of clocks 0-N-1 and from this counter 101 returning to 0 after N-1, the contents of the counter are outputted to data line 501 and decoded by decoder 102. On the basis of the output of this decoder 102, N registers 201-209 of signal lines 601- 609 are selected via data line 502 and to data line 503, the rate of used words is outputted. Further, comparator 104 compares the word rate of line 503 with the value of register 103, and comparator 109 compares the value of register 105 with that of counter 107, exercising the control so that each queue storage will not overflow in holding data. |
