[smallstepforman]

That was a PPC603/604 limitation if you wanted multi CPU’s.

[electroly]

They eventually upgraded the BeBox to the 603e, I wonder if the same L2 workaround was used on those models.

[classichasclass]

Yes. None of the 603 series, including the 603e, was intended for multiprocessing, so the same hacks were required.