m68k currently has 18 questions:
For questions about processors in the Motorola 68k (68000 series) range. Commonly used in Amiga, Atari ST, Macintosh, Sinclair QL and Sharp X68000 computers.
motorola-680x0 has 8 questions:
for questions related to the family of Motorola 680x0 processors
Two questions are tagged with both.
Should these two tags be merged into one? I do not see any valid distinction between the two.
Motorola's official name for the series was
M68000, which is neither of the tag names. I feel that
motorola-680x0 is clearer in purpose, even if it is not the "official" Motorola name. However, the tag usage for
m68k is better.