[unwind]

Cool board!

Would any of the "retro" game/home computer firmwares fit in that FPGA? I find comparing capacity hard for stuff like that.

[hi-v-rocknroll]

There's absolutely no reason ROMs have to waste scarce resources of a hybrid FPGA. Micro SD cards (called TF in China) and eMMC are the usual solutions.

Example: https://www.aliexpress.us/item/3256806498688867.html

[londons_explore]

Yes, easily, but unless someone has done it already, 'porting' them to this board would be a lot of work.