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<a href="#" onmousedown="showPopup(this, 'popup00297');"><img src="seealsolink.png" border="0" alt="" title=""></a> SystemVerilog 3.1a语言参考手册</div>
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14.3.1 SystemVerilog仿真参考算法</div>
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<div class="Element13"><div class="Element12" id="code00529"><pre class="Element12">execute_simulation {
T = 0;
initialize the values of all nets and variables;
schedule all initialization events into time 0 slot;
while (some time slot is non-empty) {
move to the next future non-empty time slot and set T;
execute_time_slot (T);
}
}
execute_time_slot {
execute_region (preponed);
while (some iterative region is non-empty) {
execute_region (active);
scan iterative regions in order {
if (region is non-empty) {
move events in region to the active region;
break from scan loop;
}
}
}
execute_region (postponed);
}
execute_region {
while (region is non-empty) {
E = any event from region;
remove E from the region;
if (E is an update event) {
update the modified object;
evaluate processes sensitive to the object and possibly schedule
further events for execution;
} else { /* E is an evaluation event */
evaluate the process associated with the event and possibly
schedule further events for execution;
}
}
}</pre></div></div>
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迭代区域以及它们的顺序为：<span class="Element146">Active</span>、<span class="Element146">Inactive</span>、<span class="Element146">Pre-NBA</span>、<span class="Element146">NBA</span>、<span class="Element146">Post-NBA</span>、<span class="Element146">Observed</span>、<span class="Element146">Postobserved</span>和<span class="Element146">Reactive</span>。</p></div>
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