Atari Football Klingon font

Xyla

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Donor 2011
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There is something wrong with my Atari Football where when it rotates the text to be shown at the top and bottom of the screen, part of it is scrambled making it look like Klingon. You can almost make out what the characters are at times. In test mode the characters displayed horizontally look normal, only the rotated ones on the sides look like Klingon.

I replaced the 74LS86 at M8 because according to the schematics they handle the rotation of the characters, but it made no difference.

There is also the problem of a constant crowd sound during the game.

Test mode says "ROM OK A" and "RAM OK".

Anyone have any suggestions for me?

Thanks!
 

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I replaced the 74LS86 at M8 because according to the schematics they handle the rotation of the characters, but it made no difference.

Which Schematics? The one I'm looking at it's not labeled.

I would look at N8, N9 and P8.
 
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