FX expansion unit

[chainsaw 0]

I've looked all over for this info, but am probably being blind! When using an FX with 10 outputs (y0 to y11) and adding an expansion unit does the expansion unit continue from these addresses (ie. start at y12) or do they start at the next 'octal block' (ie. y20) I would try it out myself, but I won't have the hardware for a few weeks yet, and not being able to find this info is kinda doing my head in! Thanks.

[Crossbow 296]

Octal Y20.