Quoted from Mtkst19:what are the 80b mpu options these days? I see rd in stock. Have seen Swemmer but no place with them in stock
If you search on eBay for johan6685 you’ll see all the boards Swemmer has.
As of now (November 14) he only has one system 80 board remaining. Just bought one for my caveman. He is quick to answer any questions you may have.