| 摘要 |
PURPOSE:To prevent a data on a service processor from being destroyed by an application program by designing the titled system that a data processing unit accesses a tree structure file of the service processor as well as the own tree structure file. CONSTITUTION:In connecting the tree file structure of a service processor (SVP) 2 into a tree file structure of a data processing unit CPU 1, the CPU 1 gives a command P to the processor SVP 2. That is, the information in a form connected to a clause svp corresponding to clauses dev, bin, log, set up processed by the processor SVP 2 is possessed by raising the command P where a flag M is set to logical 1. The CPU 1 prepares an access request Q to access a file 2 of the processor SVP 2 for a main storage device 3 and raises an access command to the SVP 2. The SVP 2, corresponding thereto, reads the request Q to execute the access processing to the file 2 from the CPU 1.
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