I don't know if it's a great idea to enable drivers we don't have a CPU core for - it's just gonna crash and make regression testing impossible.
well, cybiko v1/v2 run for at least 10 seconds without problems (but of course they're not executing any code, so they only show a blank screen); cybikoxt acts like fmtowns was acting a few days ago: it starts, it runs a couple of seconds, and finally it gets an exception due to unimplemented opcode
as long as we ignore its output error, regression testing should not be harmed by its presence