MPU 35 Jumpers

[Paul M]

Hi All
I knew I would be asking more questions soon
My board is populated with MB8516 eproms in U1 and U2 and a new 2732 in U6.
Now I believe U1 and U2 are basically 9316's. Please correct me if I'm wrong.
Could anyone tell me how to jumper it for the above combination please or do I have to get replacement 1 and 2 roms.
Many Thanks
Paul M

 

[Paul M]

Well it looks like I have identified U1 and U2 as they are pin compatible to 2716
http://www.andysarcade.net/store/index.php?act=viewProd&productId=1388
What I do think however is that I bought the wrong U6. I think it should have been a 2716 not a 2732.
Is it worth me modifying the board to swap pins around 18 and 21 I think.
Any assistance much appreciated

 

[Moonraker]

Is it worth me modifying the board to swap pins around 18 and 21 I think.
Any assistance much appreciated

Yep. If it makes it worse you can always swap it back again...

It is not unknown for projects to come with differently configure boards and hastily shoved in Game ROMs before now.

 

[Paul M]

Thanks Moonraker.
Before I do modify it I will ask Andy at pinball mania to see if he doubled up the code on the 2732.
If so I believe I can jumper it as all 2716 ROM's. We will see
Does anyone know if that is standard practice with Andy?
Many Thanks
Paul