I spoke to Jamie a few years ago (via Facebook) about this very subject, and she's not even sure where the disks with the source and object code are. "Somewhere in storage" is all she told me, and she said that it'd probably be best if someone just wrote a port of the game rather than going through the trouble of recovering the data, if she can even find the disks that contain it. She also spoke of exotic development hardware that has conditions that would be hard to replicate. This is pretty much a stock response that she's given to others who have asked her about the game, and she seems to be sticking to this.
She seems/seemed somewhat apprehensive about digging the disks out for recovery. I wonder if there are rights issues involved...
EDIT: I just read the KLOV thread, and see that she gave a big box of stuff to some computer museum in the time that I had talked to her; stuff that
may have contained the disks themselves. So this post can be safely consigned to the "old news" department. There may be some hope yet...
"One of these days, I'm going to cut you into little pieces!"- Nick Mason, Pink Floyd