Two questions:

1) Do you have a PMMU in you Mac II (you need one if you don't already 
have one)?

2) Do you have MODE32 installed (and turned on), and 32-bit addressing 
turned on in the Memory control panel?  (you also need this)

Later.

-- 
Colin Wood                                      ender@is.rice.edu
Consultant                                        Rice University
Information Technology Services                       Houston, TX