Huge update - first images of PC Engine CD-ROM booting! Especially worth noting the video description: "It's been a long road to get to this point. Many weeks of long nights, figuring out how to implement the logic, based on references like the MAME source code." Once again reminding us of the importance of past projects like MAME, and how good quality software emulation serves as an excellent documentation resource even for hardware/FPGA projects like these. Amazing effort by everyone involved, and another fragile (and expensive) system on its way to better preservation.