After the holiday shipping rush, I am going to start sending you mine.

Is it the chip bellow this orange label that i need to take out? image.jpg
It's a firepower btw

On a firepower, it'd be the 5101, which is the chip just to the left of the battery holder, turned the opposite way to all the other chips.

I "played" a bit with Rob´s NVRAM-Adapter. Rob really did a great job in designing the hardware - and I know, what I am speaking of, because we also produce NVRAM-Adapters since some years.

To make the anypin-adapter more "universal" also for Gottlieb System 1, I strained my head and made the schematics. My idea was, that you use the anypin-adapter in the 6264-configuration and simply put the anypin-adapter in a "daughter board" specially designed only for GOTTLIEB System 1.

In theory it must work, but at first I let make a prototype now and make some tests.

@Rob: I will keep you informed, when my tests have been successful.

See attached file of the layout.

Have fun

- Ingo

NVRAM-SOCKET GTB SYS1.JPG

Guess I'll not put as much priority on the System 1 nvram adapter I was working on. I had a similar setup on a prototype I recently had made, with a 6264 being adapted (allows people to use SRAM or compatible NVRAM that they already may have).

gottlieb_sys1_nvram_200.jpg

Assuming u2 is a tri-state buffer? Honesty I'm surprised someone else got around to working on this System 1's don't get a lot of love, so at least it means there will be some options for nvram on System 1 machines in the near future. I had tried testing my prototype in a Bally-35 mpu but then realized I was going to likely need to combine the OD, /CE and R/W pins there to get the enable signals for the buffer. The 5101 on the System 1 has OD and /CE permanently tied to ground though, so I'd think you could probably just combine CE2 & R/W (maybe what u1 is for on your board). Then if someone plugs it into something other than a System 1 mpu then they would just expect it to not function.

Hey Rob, I believe my Fishtales needs to be soldered in order to use your product. Can you send me a PM telling me what I need to do in order to get the board to you?