how to flip a vertical game with a switch

[kjoel0123]

I have a vertical game ( mr do) that does not have any dips to flip the screen, I noticed that some vertical games are upside down and some are not, does anyone know of any links to show how this can be done? thanks

[CheffoJeffo]

I recall someone on RGVAC making a switch that flipped the screen based on Bob Robert's article on the topic:

http://homearcade.org/BBBB/yoke.html

I can't find the RGVAC post, though.

Cheers

[kjoel0123]

Thank you,  if anyone can find the article with the switch it would be greatly appreciated, thanks

[Kevin Mullins]

This is one I found on RGVAC that explained it out step by step pretty well.......

http://tinyurl.com/o2cjk

[CheffoJeffo]

Thats the one I was thinking of ...

Cheers.

[Rocky]

I've done this mod on one of my vertical games and it works great.  I used 2 switches (one for X, one for Y).

BTW, I can move the switches with the game powered up with no problem.

[kjoel0123]

thanks a million, you guys rock.. What type of switch will I need to buy?

[Kevin Mullins]

DPDT (double pole double throw) toggle switch - two of them.

ON-OFF-ON positions

One for vertical flip and one for horizontal flip.
That way they can each be flipped independantly if needed.

[Rocky]

thanks a million, you guys rock.. What type of switch will I need to buy?

I used 2 DPDT switches from Radio Shack.  They are the slider type switches -- no middle off, just two position.

[Kevin Mullins]

 Yeah.... but toggles are cool-er .... gosh. 

[kjoel0123]

Great thanks for the tips guys !!!