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> class MyL1Cache(MyCache):
> is_top_level = True
>
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< cpu.addTwoLevelCacheHierarchy(MyCache(size = '128kB'), MyCache(size = '256kB'),
---
> cpu.addTwoLevelCacheHierarchy(MyL1Cache(size = '128kB'),
> MyL1Cache(size = '256kB'),