Month April 2021

Yellowstone 2.0 PCB layout

Yellowstone 2.0 Layout and Route

It took longer than expected, but the PCB layout is finished for version 2.0 of the Yellowstone disk controller. Phew! There’s still a bit of cleanup work to be done before I send the board for manufacturing. Hopefully I can…

Yellowstone Reprogramming and Testing

I’m working on the hardware design for version 2.0 of Yellowstone, my FPGA-based universal Apple II disk controller. Most of it is going well, but I’m facing two major challenges I’m unsure how to solve: how to support user reprogramming,…