Earlier pre-ECS 8370 (NTSC) and 8371 (PAL) aren't switchable, some of the latest 8375 only in software. Yes, the boards are exactly the same, the only other difference is the clock chip (NTSC: 28.63636 MHz, PAL: 28.37516 MHz), but that only matters if you plan to connect a genlock or an A2024 monitor.
