Baltica was a late-Proterozoic, early-Palaeozoiccontinent that now includes the East European craton of northwestern Eurasia. Baltica was created as an entity not earlier than 1.8 billion years ago. Before this time, the three segments/continents that now compose the East European craton were in different places on the globe. Baltica existed on a tectonic plate called the Baltic Plate.
The only official clones of the Spectrum were made by Timex. There were three models developed, only two of which were released:
Timex Sinclair 2068
A significantly more sophisticated machine than the original Spectrum. The most significant changes were the addition of a cartridge port, an AY-3-8912 sound chip and an improved ULA giving access to better graphics modes. The TS2068 was marketed in the United States, while very similar machines were marketed in Portugal and Poland as the Timex Computer 2068 (TC2068) and Unipolbrit Komputer 2086 (UK2086) respectively. A small amount of TC2068 were also sold in Poland.
Timex Computer 2048
A machine similar to the Spectrum 48K, but with the improved ULA from the TC2068 allowing access to the improved graphics modes. Marketed only in Portugal and Poland.
Timex Sinclair 2048
A never released variant of the TS2068 with 16KB of RAM.
Budimex, the Polish subsidiary of Ferrovial, is part of the consortium responsible for designing and building the main line of Rail Baltica in Estonia.
