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A family of 32-bit microprocessors from Freescale Semiconductor, Austin, TX, www.freescale.com, a spin-off of Motorola in 2004. Motorola introduced the first 68000 CPU in 1980, and the series has been known as the "MC68000," "68K" and "680x0." The chips were used in various devices, including workstations, PBXs and the early Mac line, starting with the first Mac in 1984. The instruction set and other elements of the 68000 architecture continue in Freescale's 68K/ColdFire embedded processor line.

Bus    MaxModel   Size   RAM

 68000   16     16MB
 68020   32     4GB
 68030   32     4GB  (built-in cache)
 68040   32     4GB  (2x fast as 68030)
 68060   32     4GB  (last model)
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References in periodicals archive ?
First making its name compilers and programming tools for the Motorola 680x0 chip, Metrowerks went on to dominate the Apple Macintosh programming market from the launch of the first PowerPC-based machines.
Two principal lines of microprocessors are evaluated--the 80x86 line, including clones, and the 680x0 line, including follow-on Powerpc microprocessors.
Data for both register and bus width are available for 80x86 and 680x0 microprocessors.
The first caches on 680x0 microprocessors held only instructions, but more recent types of 680x0 microprocessors have separate caches for instructions and for data.
It is true that graphics productivity will run much faster on Macintosh systems that use PowerPC processors than they do now on personal computers that use Motorola 680x0 or Intel 486 chips.
The two types of equipment will coexist for some time, and upgrades will be offered for many 680x0 models.
Other microprocessors supported by the lab include the Motorola 680x0 series, the Texas Instruments TMS320Cx5 DSP series, and the Intel 8096 series.
Amoeba started out on the 680x0 CPUs, and has been easily moved to the VAX, and Intel 80386.
Cheap CDs of release 2.1 for Alpha, SPARC, Motorola 680x0 and Intel x86 systems will be available from Debian distributors soon.
A CD-I player contains an optical disc drive, a Motorola 680X0 CPU, and a megabyte of memory, but it will be marketed as an enhanced CD player, not a computer.
The Butterfly Multiprocessor consists of up to 256 nodes, each of which has a Motorola 680x0 processor, special switching hardware, and up to 4 Mbytes of memory.