Motorola 68040

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Motorola 68040

(MC68040) A microprocessor from Motorola. It was the successor to the Motorola 68030 and was followed by the Motorola 68060.

The 68040 was the first 680x0 family member with an on-chip FPU. It also had split instruction and data caches of 4 kilobytes(?) each. It was fully pipelined, with six stages.

The 68040 was used in the Apple Macintosh Quadra series of personal computers.

The MC68LC040 is an MC68040 without a built-in FPU, and the MC68EC040 is an MC68040 without an MMU or FPU.
This article is provided by FOLDOC - Free Online Dictionary of Computing (
References in periodicals archive ?
But complex-instruction-set computers, or CISC designs - notably Intel's 80486 and Pentium and the Motorola 68040 - are also represented.
The Centris is affordable yet powerful, with a Motorola 68040 processor.
The decompression and imaging of a 24-bit 640 x 480 image takes less than ten seconds on a NeXT computer with a Motorola 68040 main processor; further optimization and the usual advances in processors will continue to shrink the required time.
The new NeXT systems' Motorola 68040 processor supplies a performance boost by a factor of three over earlier 68030 machines; DMA architecture is also a major factor.
Hewlett-Packard offers a line of graphics workstations based on the Motorola 68040 and 50-MHz 68030 microprocessors.