All IC are 27256's except IC 72, 73 which are 27128's and sIC 123 which is a
2764

Most of the U numbers are unique but where they wern't I prefixed the file
name with an 's' or a 'p'  However, I can't remember what s and p stand for.
I think sound and processor.  But I can't be sure.  If you run into trouble
problems identifying what they are.  Give me (ras2@tant.com) a shout and I
will check the manual or open the game back up and have a look see.

