I had been testing TinyFPGA B2 with Joris’ CDC RTL on only a MacBook Pro with USB Type C connectors, Mac OS X 10.13.2. I decided to try it on an older (USB 2.0?) MacBook Air with OS X 10.12.3.
When plugged into the Pro, the FPGA configuration (eventually) is the user application (my CDC code)
When plugged into the Air, the B2 doesn’t run the user application, it stays configured with the boot loader instead. I’ve not looked into the boot loader RTL to see what that might be…
Any ideas how to mitigate this?