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7800 Theory of Ops & T/S Guide

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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

 

Enjoy, ///BLUEman///

 

 

 

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Cool! It looks like part of the 7800 service manual. Too bad some of it's missing.

Where did you happen to find it?

 

Mitch

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Blue - thought I sent you those doc's, I'll pull out the folder later tonight and scan them up for you and post so that there is a cleaner and complete set available.

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That's right it came from dumpster dive 7800-99. I thought I had a photo of "the plunge" but can't find it. I don't know, Mitch, was there a 7800 Repair Manual from ca.1986? Shouldn't we post it? I don't have it. My 7800 works and it's XM-ready!!! But is my XM ready for me? :roll: ///blueman///

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Here's a part's list/BOM for the NTSC 7800 that I made a few years ago but never got around to posting. I was working on a silkscreen as well but never finished it. Maybe Curt's copy will have the official one. :)

 

Mitch

7800 Parts List.pdf

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BOMs away!!! Thanks 2 Mitch. I agree, this is great. Who would have thunk it 30 years ago we'd be doing all this on the 7800 now? I often wonder if GCC personnel are watching our "progress" on a machine design that must have died many, many years ago. I think we're going stronger here than the 26 and/or 52, although there are still brilliant folks over there as well. I think we have the edge with the publicized source lists and many disassemblies.

 

Leading to the equation...

 

:cool: 7800 > 5200 + 2600

 

Not to be nitpicky on Mitch, but the CR2 listed on the parts list is the Power LED. It would be interesting to see if we can dig up a costed BOM so we know how much these parts cost in 1984 +/-, especially the memory devices. Sometimes they were pricey and hard to come by. ///blueman///

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Not to be nitpicky on Mitch, but the CR2 listed on the parts list is the Power LED.

 

Good catch there! I just posted an updated version.

 

If anyone finds any more errors please let me know.

 

Mitch

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