This tech note:

http://developer.apple.com/legacy/mac/library/technotes/hw/hw_13.html

states that:

"The Macintosh Portable contains 256K of processor ROM, which is fundamentally

the same as the ROM in the Macintosh SE."

I wonder how similar "fundamentally the same" is?

Does that mean that if you put the Portable ROM in an SE and adjusted some decoding in the GLUE chips to point at the right places the SE could have 8 MB of RAM? I guess you'd also have to rebuild the RAM controller. Oh well. Sigh.

Now I kind of wish I'd picked up one of the old Portables at Goodwill back when they had them for under $30...