Apple2Disk Device - Understanding DISK2 Controller and Flux-Copier

Explore the intricacies of the Apple2Disk device in this 37-minute conference talk by Thomas Giacchi at KansasFest/A24eVR 2023. Delve into the inner workings of the DISK2 controller, understanding how bits are written and read from disk. Uncover the mechanics of copy protection and the role of weak bits as a protective measure. Learn about a potential modification to the controller's PROM that could have eliminated weak bits and increased storage capacity from 16 to 20 sectors per track. Discover how the flux-copier overcomes these challenges and gain insights into the emulator's functionality. The talk concludes with a live demonstration of the Apple2Disk device in action, providing a comprehensive look at this innovative technology for Apple II enthusiasts and retro computing aficionados.