90c90
< assert(len(cpus) == len(system.ruby.cpu_ruby_ports))
---
> assert(len(cpus) == len(system.ruby._cpu_ruby_ports))
92c92
< for (i, ruby_port) in enumerate(system.ruby.cpu_ruby_ports):
---
> for (i, ruby_port) in enumerate(system.ruby._cpu_ruby_ports):