FPGA-based disk control for Apple II is finally working! Six months ago, I began designing a universal disk controller card for the Apple II family. Apple made a bewildering number of different disk controller cards in the 1970s and 80s, and my hope was to replace the IWM chip (Integrated Wozniak Machine) and other assorted ICs typically found on the cards, and substitute a modern FPGA. With a little luck, that would make it possible to clone any vintage disk controller card – some of which are now rare and expensive. It would also enable a single card to function as many different disk controllers, simply by modifying the FPGA configuration. With the successful cloning of a Liron disk controller, the first major step towards those goals has been made.
More details at Big Mess o Wires site.
Check out the video after the break.