Emulation on a Pi adds several frames of latency, between the emulator, OS, and graphics pipeline. When combined with the latency of a modern LCD screen, this c

Emulation on a Pi adds several frames of latency, between the emulator, OS, and graphics pipeline. When combined with the latency of a modern LCD screen, this can be enough to really impair playability of some games. FPGA-based recreations of old machines can theoretically eliminate most of that latency (other than the display lag).