Several new technical documents, schematics and specifications are being added to the archives and to the Atari 7800 section in the following days.    Thanks to Art Ng, former hardware engineer of GCC, Inc.     These new documents will be posted onto the site for all to use and enjoy.    Art Ng was the hardware engineer who designed MARIA, the graphics processor in the GCC 3600 (a.k.a. The Atari 7800 PROSystem)    I will also be posting an interview with Art on the design of Maria, his thoughts on the project and also working with Atari's Engineering division.    Also, information from other GCC engineers will be added as well...    Hopefully with all of their kind and generous help, many mysteries and questions will finally be answered.
 

The first document is the GCC1702B "MARIA" Chip Specifications

The second document is the  Atari 7800 GCC OS Source Code Listing
 
 

Later documents will include the actual schematics of the MARIA 2, as well as the GCC fully commented source code listing to the OS which contains the entire commenting on how the encyption system works which should be easily reversed to create encryption checksums, other documents include the programming guide for writing software for use with the Atari 7800 computer add-on.
 

Also, just in are the original set of 5 "D" sized schematics for the Atari TIA chip.      Since it would be a monumental task scanning each segment of these sheets down into 12-16 8.5" X 11" documents, what I am going to do is making a small run of the sheets at a local printer for those who are interested in these documents.    They cost $4 per sheet from the printer, so the set is $20 plus shipping & handling.    There is no interest in profitting from this, only to provide knowledge and information out to all who are interested, so if you'd like a set, I'm willing to have 10-20 sets made.   Email me if interested.