AFAIK the 68000 and 68010 were also available in a pin-compatible package, as in the Cromemco XPU.
On Wed, Aug 6, 2025 at 10:26 PM Chris Hanson via cctalk < [email protected]> wrote: > And the Motorola 68020 was introduced a year earlier, providing an > implementation of the 32-bit 68000 architecture with full 32-bit address > and data busses and a 32-bit ALU. > > The original 68000 from 1979 and its follow-on, the 68010, were > architecturally 32-bit but used a 16-bit external data bus and 24-bit > external address bus and 16-bit ALU to implement the architecture—while the > 68008 provided a 68000 with an 8-bit external data bus and 20-bit external > address bus in a smaller package, and the 68012 provided a 68010 with a > 31-bit external address bus in a larger PGA package that was pin-compatible > with the 68010. (That is, a PGA socket could accommodate either a 68010 or > a 68012, with the latter supporting a larger physical address space.) > > -- Chris > >
