| 摘要 |
<p>State machines having a hierarchical arrangement of machines as between a parent state machine 10 and sibling state machines 11, 12, and 14. The parent state machine 10 generates a plurality of outputs constituting its output state as based upon its input state defined by inputs N and its internal state. Part of the input state is defined by a set of inputs 15 which include asynchronous signals such as reset and interrupts. The parent state machine 10 defines or partially defines input states as applied to the respective sibling state machines 11, 12, and 14 by producing a series of output states in response to input states as applied thereto and independent upon an existing internal state. This system enables machine design time to be reliably shortened by virtue of easier validation of tasks assigned to the sibling machines. <IMAGE></p> |
