I only owned a ZX Spectrum very briefly as a child (after selling my TI I think, and before I moved on to the Amstrad CPC464), but it had some great games, and Sabre Wulf is the one that has left the strongest impression. So when I discovered an accurate map on the net I just had to transform it to the TI.     The map in Sabre Wulf consists of 256 screens arranged in a 16x16 grid. The interesting thing is that the graphics do not consist of simple 2x2 or 4x4 metatiles, but rather various