Yes it was, however when the factories started picking up they usually didn't use Leningrad version. Mine was a from scratch design (it came with schematics), and sure all of them emulated ULA with discrete logic - but usually not as half assed as Leningrad did.
This was the huge advantage of Spectrum: the whole thing could be built from COTS components and the only imported part in USSR had to be the Z80A. None of those Sid, Frodo, Bilbo etc ASICs.
This was the huge advantage of Spectrum: the whole thing could be built from COTS components and the only imported part in USSR had to be the Z80A. None of those Sid, Frodo, Bilbo etc ASICs.