Has anyone successfully updated this older version of the Alltek MPU with a CR2032 or a NVRAM instead of the remote AA holder it has?

https://web.archive.org/web/20170201151908/http://allteksystems.com/pdfs/Complete_Manual_Ver_J.pdf

Thanks, in advance.

RC

I just have a bunch of CR2032 cells and I usually convert to that since it is much cheaper, but I have no problem going NVRAM on this Alltek. So, would any 2k x 8 NVRAM work, like a simtek or dallas? I have a few of those and if they will work, I can save a few bucks on ordering a new one. I have a NOS STK25C48 I think fits the bill.

Thanks for the suggestion.

The simtek seems to be working, but it comes up with a HSTD of over 900K and I would like to clear that out. I'm not finding any exact info on how to do that. I did the Alltek Memory clear function and then set the game back to Bally Eight Ball, but still has that score. Thinking that means some sort of data is still saved in the NVRAM.

Thanks for any help.

RC

I tried to manually beat that score to see if it would save that new score, but I ended up rolling in on accident.

Figured out the reset procedure. It leaves the new ending score with a 4 at the end instead of a 0. Hmmm.

Strike that, the 900K score is back now, but ends with a 4. 901504. Not sure how to clear this NVRAM of any corrupt data.

Ordered a 6116 from Weebly. Gonna have to change the socket though, as it has that rigid circular machine pin type on it. Either that or piggyback a standard sip socket into it.

No. The manual didn't mention that or I didn't read it correctly. Wait, aren't there only 32 dips? I'm confused.

Ah, yes I did do that. When I press the s3 button on the alltek, the displays go blank instead of showing 00. The game sits there in that state until you reboot and the change doesn't save.

Yes. While the funky 901504 HSTD is showing on the displays and 04 is in the Ball in play/Match window area. Does the same if I do it when 01, 02, 03 are in the window. It is supposed to take the value to 00 so you can set what you want, correct?

Bally Eight Ball 1977

Game works/plays fine. I'm sure it is some sort of data stuck in this Simtek NVRAM. It is the older Alltek with a AA battery holder and works fine when the original ram and batteries are in place.

It blanks out every time. I have a 6116 on the way from Weebly. I may try to set the board up as Harlem or one of my other Bally's and see if it behaves the same with the simtek.

Replacement NVRAM from weebly fixed this issue. $18 well spent.