NES Disassembly – Mattel Version https://www.youtube.com/watch?v=Y9LdwBGV1LwVideo can’t be loaded because JavaScript is disabled: Nintendo Entertainment System Disassembly (Mattel Version) (https://www.youtube.com/watch?v=Y9LdwBGV1Lw) Just some poking around inside a Nintendo Entertainment System! The good old Mattel variety.