To make things even more confusing, the Z80's ALU operates on 4 bits at a time while the 68000 has 3 16 bit ALUs and so can crunch 48 bits per clock. Half of t

To make things even more confusing, the Z80's ALU operates on 4 bits at a time while the 68000 has 3 16 bit ALUs and so can crunch 48 bits per clock. Half of the early ads for the 68000 called it a 16 bit processor and the rest 32 bits. The latter became more popular as time went on.