| 摘要 |
PURPOSE:To execute the emulation of a privilege instruction efficiently by dividing values corresponding to a privilege instruction code into a privilege instruction designating the interruption of execution and other privilege instructions and storing respective privilege instructions. CONSTITUTION:When a privilege instruction is detected in a program 9 to be emulated by a microprogram for executing emulation, an execution partition previously fixed so as to be converted by softwave is changed and privileges other than the privilege interrupting the partition are converted by the microprogram. At the conversion by the software, the emulation mode is released and an interruption is generated in an ECP6. The ECP6 operates in a native mode, analyze the privilege instruction generated from the program 9 to be emulated and converts the analyzed privilege instruction into a privilege instruction or a control maicroinstruction for a native mode operating system 1 to issue the converted instruction.
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