53c53
< class MemBus(CoherentXBar):
---
> class MemBus(SystemXBar):
81c81
< self.iobus = NoncoherentXBar()
---
> self.iobus = IOXBar()
146c146
< self.iobus = NoncoherentXBar()
---
> self.iobus = IOXBar()
208c208
< self.iobus = NoncoherentXBar()
---
> self.iobus = IOXBar()
314c314
< self.iobus = NoncoherentXBar()
---
> self.iobus = IOXBar()
361c361
< x86_sys.iobus = NoncoherentXBar()
---
> x86_sys.iobus = IOXBar()
397c397
< x86_sys.iobus = NoncoherentXBar()
---
> x86_sys.iobus = IOXBar()