Along these lines, Tom7 invented* 'reverse emulation' which effectively uses a Raspberry Pi as a co-processor, allowing him to run [spoilers ahoy!]an SNES emula

Along these lines, Tom7 invented* 'reverse emulation' which effectively uses a Raspberry Pi as a co-processor, allowing him to run [spoilers ahoy!]an SNES emulator on an NES.[/spoilers] The talk is brilliant: https://www.youtube.com/watch?v=ar9WRwCiSr0 https://www.youtube.com/watch?v=ar9WRwCiSr0 * - as far as I know...