Atari ST OPL3 development board pcb

“fmST” (working name) cart is taking shape, I’ve fixed most of DRC issues, added connectors for easier hardware debugging and shortened pcb length. Probably this version will go to manufacturer soon, still I wait for some additional feedback / review from more experienced electronics designers. When design will be ok I will send gerbers to manufacture (max. 5 boards) and start ordering parts to complete first development unit.