[a3f]

You had a VGA controller? That's nice. I had to design my own back in the days. https://github.com/a3f/r3k.vhdl/tree/Demo-v1/vhdl/io/vga

[makapuf]

You have an FPGA ? That's also nice, all I have is a bunch of resistors and a MCU :) https://hackaday.com/2014/02/23/the-bitbox-console-gets-upgr... (nice project btw !)