Curious and weirds Atari 2600 carts.

[VW]

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

[pcrock]

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!

[pcrock]

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.

 

 

[pcrock]

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?

[Danjovic]

 

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.

 

 

 

Edited September 19, 2020 by Danjovic
Better drawings

[pcrock]

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.

 

 

 

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