Brian Rose <lists@brianrose.net> writes:

> I tried -m5200, but it does not like %SECMBAR (secondary module base
> address register). Nor does it like %MBAR2 (used by diab).

This is a control register and should be accessible using just it's
number.  e.g.

   movec %d0,#0xC0E     | copies d0 to module base address register 2


Malcolm Butler