| 摘要 |
PURPOSE:To discriminate an interruption by a simple control and to inform respectively to a host OS and a guest OS by setting a flag turned on when a timer for dispatching the guest OS at the time of a VMM mode goes to a specific value, when the flag is turned on at the time of shifting from the VMM mode to a VMOS mode. CONSTITUTION:In the host OS 11, a NVM mode in which ordinary lobs 12, 13 travel, the VMM mode in which a VMCP 14 travels ad and a VMOS mode in which ordinary jobs 12-13 travel under the guest OS 15 are provided. In this case, at the time of travelling the ordinary jobs 12-13 in the NVM mode, when an interruption is generated, information at the time of generating the interruption is saved to the refuge area 32 of a memory 31 and the generation of the interruption is informed to the host OS 11. At the time of travelling the VMCP 14 in the VMM mode, when the interruption is generated, the information at the time of generating the interruption is saved to a VPCB 33 in the memory 31 and the generation of the interruption is informed to the host OS 11. |
