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shear_xear

7800 with flickering interference

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The two I have used while troubleshooting I received about two weeks ago.  I did just get a few more yesterday, but they could be from the same batch as well.  I will try one of them out just to be sure.  I do know that the UAV I used to check if the problem carried over to a second board worked perfectly with a later revision board, so there is definitely something about this revision that is causing this. 

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Well the same problem occurred with the third UAV board.  I know I have installed the UAV on three 7800’s with the expansion port, but these are the first two that were fully socketed.  

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Ok, so is there an actual difference between the white label pack in version of Pole Position II and the retail version with the picture of the cars?  I tested several new games, and none exhibited the flickering problem I had with Pole Position II and Ballblazer.  I think the problem is with these specific game cartridges.  

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Well...let me check my copy of PPII but mine is the white label pack in version. I also on a BB cart and I literally just modded up a 7800 about 30min with one of the new UAVs I received and at least on the diagnostics and initial games I was playing, it was working fine.

 

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I think it’s the cartridges themselves. I can’t imagine Atari doing more than just sticking a new label on the retail version of Pole Position II.  Everything else worked as it should, including a couple homebrews.  No issues whatsoever.

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Sent you a PM on something to look into. Let me know if it helps or if yours is something similar to what I found.

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