| 摘要 |
PURPOSE:To reduce considerably the amount of hardware by storing only minimum information, which is required for the extraction of memory access request, in a shift register whose degree of integration is lower than that of a register file. CONSTITUTION:The memory access request issued from a memory access request source 21 is selected by a memory access request selecting means 22. Memory access information consisting of the memory access request, a memory address, a request code, and a request source code is registered in the first buffer means 23 consisting of the register file. Memory access information, which consists of a memory band number accompanied with the memory access request and information indicating the priority of the memory access request, and contents of a register address register 27 of the first buffer means 23 where the memory access request is registered are registered in the second buffer means 24 consisting of the shift register. |
