::Motorola 68000


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The Motorola 68000 ("'sixty-eight-thousand'"; also called the m68k or Motorola 68k, "sixty-eight-kay") is a 16/32-bit<ref "16/32">{{#invoke:citation/CS1|citation |CitationClass=book }}</ref> CISC microprocessor core designed and marketed by Motorola Semiconductor Products Sector (now Freescale Semiconductor). Introduced in 1979 with HMOS technology as the first member of the successful 32-bit m68k family of microprocessors, it is generally software forward compatible with the rest of the line despite being limited to a 16-bit wide external bus.<ref name="Starnes">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> After 35 years in production, the 68000 architecture is still in use.

Pre-release XC68000 chip manufactured in 1979.
Die of Motorola 68000.

Motorola 68000 sections
Intro  History  Applications  Architecture  Instruction set details  68EC000  Example code  See also  Notable systems  References  Further reading  External links  

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