OS card for a Bally Bonus Times 3 reel single line game?

[br549autosales]

I have a several OS cards to choose from, just don't know the right one for this game. Thanks in advance

[rickhunter]

The OS is bios dependent and not game dependent in Alpha 1 games, except for the newer games that also work on alpha 2 pro machines.  What bios is in your MPU?

[br549autosales]

How can I check to see what bios mine is?

[rickhunter]

Pull out MPU and look at the sticker on the one 32pin eprom chip.

[br549autosales]

Thanks, I'll try that shortly

[sixcardmark]

Here's an Alpha PDF chart that Ted made that has all the info you need.  I never leave home without it.
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=2ahUKEwjF6Kj11cXpAhWoAZ0JHc4fDU8QFjABegQIAxAB&url=http%3A%2F%2Fnewlifegames.com%2Fnlg%2Findex.php%3Faction%3Ddlattach%3Btopic%3D10558.0%3Battach%3D28896&usg=AOvVaw1MBeif4c2kQsxowHM2165_


I like to use 317-2 OS on 512 mpu's & 336-9 OS on 1G mpu's.

[br549autosales]

This MPU has the following printed on the chip:
AVBBP26S300M-03

[br549autosales]

Also while on the subject, what size battery goes on the backplane, a 2032?

[br549autosales]

Sixcardmark, that Google link would not open up for me

[sixcardmark]

A box should pop up asking if you want to open or save file.

[br549autosales]

Must be an issue with my phone, I'll try again later, thanks

[sixcardmark]

Must be an issue with my phone, I'll try again later, thanks

  Yes need to be on a computer with PDF reader installed I would think.

[br549autosales]

Ok, I'll try that later then, thank you sir

[rickhunter]

You need a 33x level OS (the ones that come in a 2GB Green CF card).