At 10:55 AM 1/19/00 -0600, you wrote:
The main one being that the 2 main vectors (reset & NMI) jump
to code outside the keyed area (intentionally or unintentionally,
they didn't care). As mentioned, various games do this. Harry's
Monitor cart does this too.
Not only that, but in-house Atari games didn't have to worry about
approval. By nature they were approved, so there was no reason to go
through the formal encryption process for the whole game. This system was
really designed to lock out unauthorized 3rd parties. As you know, there
were few third parties who even stepped up to the plate with the 7800
anyway, and those that did were probably coaxed into doing so by Atari, so
for the most part the encryption was an unnecessary protective step.
Glenn Saunders - Producer - Cyberpunks Entertainment
Personal homepage: http://www.geocities.com/Hollywood/1698
Cyberpunks Entertainment: http://cyberpunks.uni.cc
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