Just to clarify what we are talking about:
If symbios24 asked if this can be done on a SNES Everdrive, my answer would be: I don't know, but I guess not since it sounds like its FPGA hardware is much less powerful than the one in the SD2SNES, which for a long time no one believed could fit a whole Super Gameboy.
But what I think symbios24 was asking is if there is some hacky way to do it on a SNES Everdrive, like injecting a GB rom in the SGB BIOS, and my answer is: It's not possible just using software. You still need the Gameboy hardware to run Gameboy software and the SNES doesn't have this hardware, it's inside the SGB cartridge.
