I looked but never found these Atari 7800 docs on the net. This is a copy of the telex from 1984, but still readable. With the XM release pending, it's a good time to start dusting off the good ole 7800 and make it run. As the XM games aren't exactly compatible with the emulators, you'll need a working 7800, and soon.
The zip pkg includes the 7800 Theory of Operations, albeit somewhat simplified and refers to a schematic not included, but aa.com has the one page schematic complete; the 7800 Block Diagram, also simplified; and the 7800 Diagnostic Flowchart, a.k.a. Troubleshooting Guide. This flowchart was obviously intended for newly-built 7800s, but you can still use it. One comment: NEVER drop kick your 7800 and throw it in the trash - there's some good parts in there!!! Give it to me!!! Gimme gimme gimme...
7800 Atari Theory of Ops.zip 7.9MB 416 downloads