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pcrock

Curious and weirds Atari 2600 carts.

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This thread makes me want to take apart my 30 in 1 cartridge.

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2 minutes ago, VW said:

This thread makes me want to take apart my 30 in 1 cartridge.

Would be very interesting! I would like to see!

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I Found another one.
It is a 4 in 1 
The most interesting thing is that in this circuit, the switches are not SPDT devices as in the in MOST OF THEM!

Here the switches are simple on/off ones.

 

 

WhatsApp Image 2020-09-17 at 22.30.42 (1).jpeg

WhatsApp Image 2020-09-17 at 22.30.42 (2).jpeg

WhatsApp Image 2020-09-17 at 22.30.42 (3).jpeg

WhatsApp Image 2020-09-17 at 22.30.42.jpeg

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21 hours ago, VW said:

This thread makes me want to take apart my 30 in 1 cartridge.

How do you choose the game on this cartridge?

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On 9/17/2020 at 10:51 PM, pcrock said:

I Found another one.
It is a 4 in 1 
The most interesting thing is that in this circuit, the switches are not SPDT devices as in the in MOST OF THEM!

Here the switches are simple on/off ones.

The pins are pulled up by resistors and the switches can push the lines down (when closed). The remaining components are a transistor inverter with speed up circuit at base.

 

image.png.edf91d6c5b13210b111646253b217914.png

 

CARTA.thumb.png.8ce926d707d900a405667fc45a8a2816.png

 

Edited by Danjovic
Better drawings
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23 hours ago, Danjovic said:

 

The pins are pulled up by resistors and the switches can push the lines down (when closed). The remaining components are a transistor inverter with speed up circuit at base.

 

image.png.edf91d6c5b13210b111646253b217914.png

 

CARTA.thumb.png.8ce926d707d900a405667fc45a8a2816.png

 

Woww!!! Very very thanks for the Schematics!!! I really wanted it!!! The engeneer loved 8k2 resistors values!! Ahahahhahahah

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