Since I was a kid playing my old 2600 I wish I could pause the game every time my mom would push me to do something she deemed more important than playing video games (like there was such a thing!!). Shower, dinner, homework, whatever. All sorts of useless activities which would inevitably force me to start the quest for that new level all over again.
Later, the wife took over the pushing task from my mom with renewed energy and the problem would just not go away...
Then the blessed Victor Trucco came up with the long needed pause mod for the 2600, but I just couldn't get myself to punch a hole on my old friend to install the pause switch!
A while ago I came up with a version of Victor's circuit which had a proximity sensor instead of a physical switch. That worked well for a while, but I had to put a sticker on the console to mark the place where the sensor was installed. Still not exactly what I wanted.
Finally, I came up with a different approach: to use the color switch to pause the game. I never really used the color switch so it seemed like a good compromise.
So here it is, a pause circuit which does not require any external modification to the console plus a few extras:
1. The installation is a bit simpler: there is no need to cut any tracks or remove the pull up resistor from the RDY line.
2. If the console is turned on with the color switch in "B/W", the pause is disabled and you can switch between color and b/w like it was originally intended to.
3. There is already a dedicated line to mute the audio channel, so no need to use an extra diode if you want to mute during pause.
4. It can be easily integrated with composite video mods to black out the screen during pause.
5. It is a lot smaller than the original board
I tested it on my old console and it works fine:
I made a few extra kits, so if anyone is interested, I can sell them for 9.99€ plus shipping from Europe (about 3.70€ for international shipping to any country).
If anyone is interested in reselling just pm me and we will figure out a better price.
I will work on an installation manual if there is interest.