If you are as curious as I were what the card looks like, then have a look at this:<p><a href="https://github.com/a2fpga/a2fpga_core/blob/main/boards/a2n20v1/photos/a2n20v1.png">https://github.com/a2fpga/a2fpga_core/blob/main/boards/a2n20...</a><p>I always find it impressive how integrated our electronics have become and how few components are required to achieve what would have taken large, crowded PCBs in the past.
Great to see the Sipeed Tang Nano modules being used - they are based on a Gowin FPGA chip and the dev modules (with HDMI and a stack of GPIO pins broken out) cost peanuts on aliexpress compared to equivalent FPGAs from more popular vendors. The vendor IDE is usable and open source tools are improving. Exciting times for embedded hobbyists.
This is fantastic. I once dreamed of making a generic interface card that could be programmed at will, using, say, a raspberry pi. However, a look through the timing diagrams in Sather shows surprisingly tiny latencies between the address and r/w signals hitting the bus, and the memory value needing to be presented. I concluded that an fpga would probably be required. Always fun when you can wait a few years and someone smarter than you builds the thing you imagined!
once again i regret my decision to get an apple //c for my collection rather than the more expandable apple ][ or //e. in my defense, it just looks so cute!