Back in the end of 80s - 90s in the USSR/Russia were were lots of ZX Spectrum variants, and none of them had the ULA. They all were engineered to use the most p

Back in the end of 80s - 90s in the USSR/Russia were were lots of ZX Spectrum variants, and none of them had the ULA. They all were engineered to use the most popular and easy to obtain components. So i believe you still can build one for cheap. This one was one of the most popular variants https://en.wikipedia.org/wiki/Pentagon_(computer) https://en.wikipedia.org/wiki/Pentagon_(computer)