10 layers224.5 × 160 mm

Haasoscope pro adc fpga board
drandyhaas/HaasoscopePro
Affordable 2 GHz 3.2 GS/s 12 bit open-source open-hardware expandable USB real-time oscilloscope
586 parts485MIT
KiCad boards from 2 GitHub repositories tagged “altera-fpga”, the most starred first; open any of them in PCBKit.

drandyhaas/HaasoscopePro
Affordable 2 GHz 3.2 GS/s 12 bit open-source open-hardware expandable USB real-time oscilloscope

mbtaylor1982/ReSDMAC
Verilog code to replace the Commodore SDMAC found in the A3000