The TS1500 was
the solution Timex of Portugal offered to Timex Corporation to solve
the TS1000 problems in the US. TS1500 was a 16K RAM version of the
TS1000 with a new case design, new board design (ULA made by Timex) and
chiclet keys, like ZX Spectrum. This new case, witch almost look like a
Spectrum, was the case of the prototype of TS2000. If TS1500
wasn´t made, this case might
be used in the TS2016. It is also 100% compativel with the ZX81.
TS1500 arrived too late and never had the chance to create a market of it's own.