Complex sentence: The 68010 vas a revised version of the 68000 with minor modifications to the core, and likewise the 68030 was a revised 68020 with some more powerful features, none of them significant enough to classify as a major upgrade to the "core".
Split into simpler sentences: The 68010 vas a revised version of the 68000 with minor modifications to the core and likewise the 68030 was a revised 68020 with some more powerful features. None of them significant enough to clasify as a major upgrade to the "core".