| 摘要 |
PURPOSE:To enable the readout and write-in for the data of designated length in a short time from the memory, by efficiently converting the length of processed data and the memory head address through the use of ROMs. CONSTITUTION:The length of processed data is initially set to a register 6 via a data selector 5, and the value in lower rank 2-bit of the head address at the main memory 22 of processed data is initially set to the register 8. Next, when the memory readout designation is set with microprogram, the types of memory readout are decided with a ROM10 through the value of lower rank 2-bit of the head address of processed data and stored in the register 9. Succeedingly, the value of the register 9 is output to the bus 17 via the gate circuit 17 and set to the readout mode register of the memory controller 21. Further, the content in address designation from the main memory 22 is read out in the memory data register. |
