| 摘要 |
PURPOSE:To reduce the restriction on program formation, by reducing the processing time and number of steps of program, through enabling to select the main memory and slave memory without exection of instruction. CONSTITUTION:When two memory sections 2 and 3 are selected, the limitation that only when the address satisfies a condition, the slave memory can be selected, without the operation of selection only with FF4. Thus, even if the selection FF is set, when the address not satisfies the condition, the main memory is selected and if satisfied, the slave memory is selected. That is, the master and slave can be selected with FF set. The memory capacity for the slave memory is limited with the addition of the address condition, but since the slave memory has smaller capacity than the main memory in general, it is not unnatural. With this consitution, the master and slave memory can freely be selected without the selection instruction, allowing to reduce the number of steps and processing time. |
