| 摘要 |
PURPOSE:To elevate buffering effect by providing a means to decide a buffer unit number which decides the buffer unit number basing on the attribute of input or output data, and deciding the size of buffer to be used. CONSTITUTION:A main controller 4 outputs an in-output instruction of data and instructional control informations indicating attribute of data to an in and output controller 6. The controller 6 has a function as a decisive means of buffer unit number to decide buffer unit number on the basis of attribute of input or output data, and performs housing of input and output data into 9 buffer 7 and makes a decision of the buffer unit number. Thus, the size of the buffer to be used can be decided by providing the decisive means of buffer unit number to decide buffer unit number basing on the attribute of input or output data on the controller 6, and elevation of buffering effect can be attained. |
