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To deal with the issue of the game starting right away with free play because the start buttons are pressed after switching games, I’m working on making the initial high score code wait for releasing both buttons (with a timeout). I’m going to try to show the game title when doing this as well...

After making some high score saves boards for the dedicated Sega cabinets, I figured I would try to "complete" the vector labs multigame to add the high score saving that was originally planned. I added an FRAM to the nvram spot on the board, FM16W08-SG, plus a 0.1uF cap for it's decoupling...

You should run the vector generator tests after verifying that the ram is ok. Start with the halt test and move on from there. You can check the halt times to see if at least the digital part of the vector generator is working. If the vector generator is getting stuck then the game will be...

After fighting with fixing the stock AC motor for the beacons on my F14 Tomcat (not a fan of the motor design), I made an adapter to use a $15 DC geared motor (24V 100RPM, offset output shaft) from Amazon. You need to use a bridge rectifier to rectify the AC into DC. I also added a 5W 50 ohm...

Looking for a system11A board that has minimal battery damage to get going for my F14 pinball. Not working or untested is OK as long as it is in OK physical shape.

You can use the tester to check the vector generator without the math box connected. That would be a good place to start. The game should also display test mode with the math box disconnected.

I'm not sure why ram chips would prevent the FPGA tester from connecting - I have not seen that before. In terms of the vector generator, you want to start with just the "halt" test and go from there. If you can't get that to work (or the timing is off), you want to focus on getting that...

Related to DAC speed and DACs in general: The latest revision of this board can write to the X and Y dacs simultaneously using both SPI ports on the Teensy. Also these DACs can be clocked at much higher than 20MHz SPI clock (you can get a couple of MSPS out of them) and seem OK. Really the RGB...

Good luck tracking things down. I usually ground the clock and start connections (currently using the twisted pair wires) but the data probe can often be used without connecting ground which makes it easier to move around. Bad count could be either the clock or the start/stop signal. You...

This is now sold

This is now sold. Thanks for all the interest!

This is still available. Open to trades and/or offers. For trades I’m mostly focusing on Sega vectors (so something like a Zaxxon empty or converted cab or other G80 vector boards or parts would be of interest to me) but have also been looking for a Star castle cabinet or non-EM pinball project.

This is pending pickup. I’ll update when it’s sold and out the door. Thanks for all the interest Fred