Seems the design is mostly functional. I manager tot swap scl andere sda on the flat panel connector, which I'll bodge on the other PCB. Als one of the feedback resistors for one of the voltage converters was wrong. Biggest oopsie up til now: the headphone jack footprint is inverted, so it needs to be soldered on the other side...
(Alt: PCB with a Lattice FPGA, ESP32S3 module, C&T VGA chip, AMD 486dx5-133 plus various memories etc. One USBC connector, two USBA ones, micro-sd card, VGA connector.)
