I have two NBA Fastbreak's that I am trying to link. After following the linking instructions found on IPDB.com I get an error that says "Waiting for Link" when I press either start button. I have tried resetting both games to factory defaults the going through the linking process again. Still no luck.
I have confirmed the cable I made has continuity between all three pins.
Running game rom 3.1 and sound rom 3.0 in both machines.
U22 has a Max239CNG installed in both A/V boards.
U24 has a PC16550CN installed in both A/V boards. I noticed that in another thread the IC used in this socket was a TL16C550CN. This is exactly what I ordered from Jameco and they sent me the IC I currently have installed. I have no idea if the IC that was sent to me is a suitable replacement for the TL16C550CN. Would someone be able to help me identify if the IC that was sent is a good replacement?
Attached are a few pictures.
If you have anything I can try to get the linked games working together I am all ears!