| 摘要 |
PURPOSE:To remove the wasteful time due to the break-in of the control program by writing the address of the interruption processing program of the running virtual computer to each entry of the vector table of the control program referred-to by an actual computer beforehand at the time of the occurrence of the interruption. CONSTITUTION:While a user program UP 515 is executed under the operating system OS 506 of a virtual computer VM, the interruption is executed, and then, the hardware of the actual computer BM 501 starts to execute the interrup tion processing. Since the address of the stack 558 of a special control program VMM 502 is indicated by a system stack pointer SSP, the contents of the SSP are re-written to the address of a stack 556 at the dispatching processing, and then, the condition of the program counter IAR of the BM 501, various arithme tic registers and processors is directly saved to the stack 556 in the OS 506. For the new instruction removal of the action of the BM 501, the head address of an interruption processing program 557 of the OS 506 of the VM is set direct ly to the IAR.
|
