| 摘要 |
PURPOSE:To effectively use a main storage device by automatically loading a system task to the main storage device with the aid of a use start command in a user program and releasing the task out of the main storage device with the aid of a use termination command. CONSTITUTION:Receiving the system task use start command from a user task 5, a cursor 1 adds '1' to contents in a counter 10. Then a main storage area in the system task 10 is secured in a nonresident area, and a program for the system task is loaded in the main storage area from a floppy disk 22. When the loading of the program is completed to bring the system task 10 executable, the command transmitted from the user task 5 is transmitted to a system task 10, and the start processing is executed. When the user task 5 uses up a function supported by a system task 2, the system task use termination command is transmitted to the cursor 1 to release the main storage area.
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