The Motorola MC68012 processor is a 16/32-bit microprocessor from the early 1980s. It is a 84-pin PGA version of the MotorolaMC68010. The memory space was extended to 2GB and an RMC pin was added. All other features of the MC68010 was preserved.
The Motorola 680x0/0x0/m68k/68k/68K family of CISC microprocessor CPU chips were 32-bit from the start, and were the primary competition for the Intel x86 family of chips.
There is also no revision of the 68060, as Motorola was in the process of shifting away from the 68k and 88k processor lines into its new PowerPC business, so the 68070 was never developed.
Had Motorola decided to stick with the 680x0 series, it is very likely that the next processor (68080) would have resembled Intel's P6 architecture.
The Motorola 68000 is a CISC microprocessor, the first member of a successful family of microprocessors, which were all mostly software compatible.
Motorola ceased production of the 68000 in 2000, although derivatives, notably the CPU32 family, continue in production.
The Motorola 68901 had a number of severe defects, including the ability to lose the highest-priority interrupt if it and the clock interrupt happened within some window of each other.
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