bally AS-2518-32 / AS-2518-50 prom adapter schematic?

[stevebm1]

hi,does anyone have a copy of the schematic for using a 2716 eprom instead of the original prom on early bally sound boards.I know you can buy adapters in the US,but I thought I might have a go at making one myself

thanks in advance

 

[stevebm1]

someone on jammaplus told me the answer,I will leave it here for reference

 

[BallyWilliams suck]

Steve - did this work? As the diagram looks wrong compared to the one you can buy at pinitech:

Early Bally Sound 729-18 and 729-51 PROM to 2716 EPROM

I got tired of shelling out for Bally sound PROMs or EPROM adapters every time I needed one, so I made my own adapter which is now available on my website. http://nvram.weebly.com/repair--conversion-kits.html The adapters allows you to use a 2716 EPROM in place of the 82S123 masked PROM like...

pinside.com

 

[stevebm1]

yes worked for me in my lost world