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The microphase separation in melts of asymmetric triblock and trigraft, periodic polyblock and polygraft, and star-shaped copolymers of two types ((An)*(Bm)* and (A „Bm)*) is investigated within the framework of the mean field approximation. To enable rapid comparison of the behavior of various types of block copolymer architecture, a special program “Supercrystal” using previously calculated higher correlators of specific systems is elaborated. Surfaces of phase transition between phases with different supercrystal symmetry and a spatially homogeneous state are constructed as a function of molecular architecture and the Flory parameter. A behavior similar to a tricritical one is observed in melts of star-shaped copolymers of the kind (A „)*(Bm)* with k> 5, k being the number of arms. Phase diagramsobtained for the other systems are like the phase diagram obtained by Leibler for the molten diblock copolymer, but …