PEx ROM Project — #5

Post #5 by ojfd

Source Forum	68kMLA
Category	Troubleshooting
Post Date	Mon, 14 Nov 2011 - 00:02
Original URL	https://68kmla.org/bb/threads/pex-rom-project.23568/

Post

The big question mark is whether the downloads we have of the PEx code is an actual accurate copy of what's on the chips of the PEx ROM. When I compare downloaded 9600 code to what I read directly

off the 9600 ROMs, it does not match.

Could it be, perhaps, something similar to this case?

http://lowendmac.com/coventry/06/apple-ii-clones.html

Because of the Apple vs. Franklin case, a small icon that said "Stolen!! © Apple" was hidden in the ROM during the development of the original Macintosh. Susan Kare designed the icon, and Steve Capps and Andy Hertzfeld worked on implementing it, so that when the ROM was copied, the icon would appear.

Full story here:

http://folklore.org/StoryView.py?project=Macintosh&story=Stolen_From_Apple.txt

By that I mean, that it is quite possible that the ROM is somehow protected and modifies dumped data while it is being copied.

?