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 ?
The model HP 8753E employs a model 68040 microprocessor and overhauled firmware that produces major reductions in the time required to sweep, perform measurements, transfer data, recall instrument states, perform error correction and perform time-domain analysis.
Power Secretary requires System 7, a 68040 microprocessor, and a 16-bit sound card.
Centris 610 and 650 feature the 68040 microprocessor that adds speed and capacity; the main difference between them are the expandability and speed of the 650.