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TIA signal differences between PAL & NTSC


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I bought the "Atari 2600 DIY S-Video, Composite and stereo AV Mod - Complete Kit" from Electronicsentimentalities on Ebay which is (as I understand it) the "BAtari Atari 2600 AV Mod Kit".


I know that the kit is for NTSC and so are the instructions but from what I've read before there probably was only the TIA pinouts which would differ, so I thought that it only would be to compare the pinouts of the NTSC and PAL TIAs and then I'd know how to solder it. The problem is that I don't know if I've gotten the right pinouts or if I'm missing something. Attached is the pinout picture I've looked at showing both TIAs and there it seems like there are signals on the NTSC TIA that's missing on the PAL TIA. According to the litte mod PCB I'm supposed to connect the following TIA pins; 2, 5, 6, 7, 8, 9, 12 & 13. Pin 6 (BLK) on the NTSC TIA is the first questionmark, where is that signal on the PAL TIA? The next one is regarding the audio, it seems that the PAL TIA only has one channel, is this a combined version of both audio channels? In that case I can bridge the signal so that I get sound in both connectors (if it's impossible to get stereo out of an PAL TIA that is).


My console is a wooden 4-switch CX-2600 AP (manufactured in Hong Kong).




Any input on the TIAs or/and on modding a PAL console is appreciated!


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According to this post, you just ignore the BLK signal and the second audio pin (they are combined internally on PAL TIA) and omit a few components on the board.


Thanks for the reply! I'll have a go at it in a couple of days I think. Meanwhile hopefully someone will reply to this thread with own experience as well and in the end it would perhaps be possible to write a guide.

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  • 3 years later...

This thread might be dead but I'll give it a try anyways.

I have the same problem and have tried the solutions posted in http://www.atariage.com/forums/topic/176257-lets-design-a-new-video-mod/page__view__findpost__p__2251727

I get picture and sound that are clear, the only problem is that the picture comes out in black and white.

Any ideas to get colour?

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