| 摘要 |
PURPOSE:To perform data access in a short time in the logical address spaces excluding won one by executing the data access processing based on the space number information and the address information and in response to a switching request of the logical address spaces. CONSTITUTION:A task 42 is executed in an own logical address space 40, and an instruction 43 which gives access to the data 53 in a logical address space 50 outside the space 40 is fetched by an instruction register 11 in an instruction interpreting and executing device 1. Thus the device 1 knows access to be given to the space 50 from a function part 21 of an instruction code and gives a switching request of the logical address spaces to a logical address space controller 3 by a logical address space number 22. Then access is given to the data 53 on the space 50 by the logical address information 23.
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