Your memory's going, I'm afraid. The original version, the BBC Model B one, used a novel split-screen technique. The upper larger portion showing space was Mode 4, 1bpp at 320 × 256 if it was the whole screen, the bottom flight-deck portion was Mode 5, 2bpp at 160 × 256. Here's a screenshot, http://upload.wikimedia.org/wikipedia/en/c/c4/BBC_Micro_Elit...