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...

Click to expand...

You *could*, but... You could move the ROM addresses to $90 0000 in any compact Mac by fooling with the address decoder PALs, so they could have 9 MB of RAM like a Portable (8 MB in a 5126). You'd have to go thru the ROM and correct every place where non-relocatable code exists. The hardware is different enough that the Portable ROM wouldn't correctly initialize an SE, but the toolbox and OS parts are the same. So yes, it's theoretically doable. In practice, I doubt it gets attempted.

I did pick up a couple of those Portables. Want one? PM me.