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The Motorola 68000 series (also known as 680x0, m68000, m68k, or 68k) is a family of 32-bit complex instruction set computer (CISC) microprocessors.During the 1980s and early 1990s, they were popular in personal computers and workstations and were the primary competitors of Intel's x86 microprocessors.
The Motorola 68000 (sometimes shortened to Motorola 68k or m68k and usually pronounced "sixty-eight-thousand") [2] [3] is a 16/32-bit complex instruction set computer (CISC) microprocessor, introduced in 1979 by Motorola Semiconductor Products Sector. The design implements a 32-bit instruction set, with 32-bit registers and a 16-bit internal ...
The M·CORE instruction set is very different from the 68k instruction set—in particular, M·CORE is a pure load-store machine and all M·CORE instructions are 16 bit, while 68k instructions are a variety of lengths. However, 68k assembly language source code can be mechanically translated to M·CORE assembly language. [8]
However, Fido has its own unique architecture and shares the instruction set with 68k only. [ 11 ] In November 2006, Freescale announced that ColdFire microprocessor cores were available for license as semiconductor Intellectual Property through their IP licensing and support partner IPextreme Inc. [ 12 ] [ 13 ] ColdFire v1 core is now ...
A Motorola 68020 processor. The Motorola 68020 was the first 32-bit Mac processor, first used on the Macintosh II.The 68020 has many improvements over the 68000, including an instruction cache, and was the first Mac processor to support a paged memory management unit, the Motorola 68851.
The Motorola 68040 ("sixty-eight-oh-forty") is a 32-bit microprocessor in the Motorola 68000 series, released in 1990. [2] It is the successor to the 68030 and is followed by the 68060 , skipping the 68050.
The Motorola 68030 ("sixty-eight-oh-thirty") is a 32-bit microprocessor in the Motorola 68000 family. It was released in 1987. The 68030 was the successor to the Motorola 68020, and was followed by the Motorola 68040. In keeping with general Motorola naming, this CPU is often referred to as the 030 (pronounced oh-three-oh or oh-thirty).
For example, the Motorola 68010 (and the obscure 68012) is a 68000 with improvements to the loop instruction and the ability to suspend then continue an instruction in the event of a page fault, enabling the use of virtual memory with the appropriate MMU hardware. There were, however, no major overhauls of the core architecture.