| 摘要 |
A computer system and method are provided for executing multiple software of different mission-criticality. The computer system includes at least one access control circuit to prevent access to memory assigned to software of greater mission-criticality by software of lesser mission-criticality. The access control circuit is configured to be in a first position allowing access to a first memory for purposes of data retrieval and storage when the greater mission-critical software is executing and in a second position when a lesser mission-critical software is executing, allowing access to a second memory but preventing access to the first memory. The greater mission-critical software is configured to provide control signals to the access control circuit instructing the access control circuit to maneuver to the second position, when necessary, by generating an interrupt.
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