44,45c44
< test_sys.iobridge = Bridge(delay='50ns', nack_delay='4ns',
< ranges = [AddrRange(0, '8GB')])
---
> test_sys.iobridge = Bridge(delay='50ns', ranges = [AddrRange(0, '8GB')])
55,56c54
< drive_sys.iobridge = Bridge(delay='50ns', nack_delay='4ns',
< ranges = [AddrRange(0, '8GB')])
---
> drive_sys.iobridge = Bridge(delay='50ns', ranges = [AddrRange(0, '8GB')])