| 摘要 |
PURPOSE:To perform the numerical analysis, etc. with the C mode control after a C mode processor decodes the factor of interruption, by giving an instruction which has an interruption function to the C mode processor from an S mode processor. CONSTITUTION:An interruption function is produced when a sequence instruction is executed while an S mode processor 12 is executing the sequence process control. A C mode processor 11 decodes an interruption level which is presently produced from an interruption level line 9. A bus occupation instruction is produced after the interruption level is decided, and the factor of interruption is taken out of a memory 22 for storage of S mode control information. Then the head address is extracted from a control information head address table contained in a memory 21 for storage of C mode control information corresponding to the memory 22. This head address is stored in a program counter 61 in the processor 11, and the control is performed in accordance with the factor of interruption. That is, it is possible to carry out the decision of the priority level for a sequence program, the control of display of an abnormal area onto a CRT screen, etc. with the C mode control.
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