Motorola 68040 microprocessor

E224901

CISC processor CPU Motorola 680x0 family processor microprocessor

The Motorola 68040 microprocessor is a 32-bit CISC CPU from the Motorola 680x0 family, widely used in early 1990s workstations, servers, and Apple Macintosh computers for its integrated floating-point and memory management units.

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All labels observed (12)

Label	Occurrences
Motorola 68040	39
Motorola 68LC040	10
Motorola 68040 family	2
MC68040	1
MC68EC040	1
MC68EC040 has reduced MMU support	1
MC68EC040V	1
MC68LC040	1
MC68LC040 lacks integrated FPU	1
MC68LC040V	1
Motorola 68040 microprocessor canonical	1
Motorola 68050 (canceled design)	1

How this entity was disambiguated

This entity first appeared as the object of triple T1774610 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Motorola 68040 microprocessor
Context triple: [Motorola, notableProduct, Motorola 68040 microprocessor]

A. Motorola 68030 microprocessor
The Motorola 68030 microprocessor is a 32-bit CISC CPU from Motorola's 680x0 family, widely used in late-1980s and early-1990s workstations, servers, and personal computers such as early Apple Macintosh models.
B. Motorola 68020 microprocessor
The Motorola 68020 microprocessor is a 32-bit CISC CPU introduced in the early 1980s that powered many workstations, servers, and Apple Macintosh computers, offering enhanced performance and features over its 68000-series predecessors.
C. Motorola 68000 family
The Motorola 68000 family is a line of 16/32-bit CISC microprocessors widely used in early personal computers, workstations, and game consoles during the 1980s and early 1990s.
D. Motorola 88000 family
The Motorola 88000 family is a RISC-based microprocessor line developed by Motorola as a high-performance follow-up to its earlier 68000 series, aimed primarily at workstations and embedded systems.
E. Motorola 6800 microprocessor
The Motorola 6800 microprocessor is an 8-bit CPU introduced in the mid-1970s that became influential in early microcomputer and embedded system designs.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Motorola 68040 microprocessor
Target entity description: The Motorola 68040 microprocessor is a 32-bit CISC CPU from the Motorola 680x0 family, widely used in early 1990s workstations, servers, and Apple Macintosh computers for its integrated floating-point and memory management units.

A. Motorola 68030 microprocessor
The Motorola 68030 microprocessor is a 32-bit CISC CPU from Motorola's 680x0 family, widely used in late-1980s and early-1990s workstations, servers, and personal computers such as early Apple Macintosh models.
B. Motorola 68020 microprocessor
The Motorola 68020 microprocessor is a 32-bit CISC CPU introduced in the early 1980s that powered many workstations, servers, and Apple Macintosh computers, offering enhanced performance and features over its 68000-series predecessors.
C. Motorola 68000 family
The Motorola 68000 family is a line of 16/32-bit CISC microprocessors widely used in early personal computers, workstations, and game consoles during the 1980s and early 1990s.
D. Motorola 88000 family
The Motorola 88000 family is a RISC-based microprocessor line developed by Motorola as a high-performance follow-up to its earlier 68000 series, aimed primarily at workstations and embedded systems.
E. Motorola 6800 microprocessor
The Motorola 6800 microprocessor is an 8-bit CPU introduced in the mid-1970s that became influential in early microcomputer and embedded system designs.
F. None of above. chosen

Statements (50)

Predicate	Object
instanceOf	CISC processor ⓘ CPU ⓘ Motorola 680x0 family processor ⓘ microprocessor ⓘ
addressBusWidth	32-bit ⓘ
applicationDomain	embedded control ⓘ personal computers ⓘ servers ⓘ workstations ⓘ
architecture	Motorola 680x0 ⓘ linked to: Motorola 68000 family
bitWidth	32-bit ⓘ
cacheSize	4 KB data cache ⓘ 4 KB instruction cache ⓘ
clockSpeedRange	20 MHz to 40 MHz ⓘ
dataBusWidth	32-bit ⓘ
designGoal	higher performance than Motorola 68030 ⓘ
familyMemberOf	Motorola 68000 series ⓘ linked to: Motorola 68000 family
featureOfVariant	MC68EC040 has reduced MMU support ⓘ linked to: Motorola 68040 microprocessor MC68LC040 lacks integrated FPU ⓘ linked to: Motorola 68040 microprocessor
hasIntegratedUnit	floating-point unit ⓘ memory management unit ⓘ
instructionSetType	CISC ⓘ
introductionYear	1990 ⓘ
manufacturer	Motorola ⓘ
maxClockSpeed	40 MHz (standard parts) ⓘ
onChipCache	separate instruction and data caches ⓘ
pipelineStages	6-stage pipeline ⓘ
predecessor	Motorola 68030 ⓘ linked to: Motorola 68030 microprocessor
processTechnology	0.65 µm CMOS (later steppings) ⓘ 0.8 µm CMOS ⓘ
successor	Motorola 68050 (canceled design) ⓘ linked to: Motorola 68040 microprocessor Motorola 68060 ⓘ
supports	IEEE 754 floating-point (full 68040) ⓘ burst bus cycles ⓘ copyback cache mode ⓘ on-chip demand-paged virtual memory ⓘ write-through cache mode ⓘ
usedIn	Amiga 4000 ⓘ linked to: Commodore Amiga 4000 Amiga accelerator boards ⓘ Apple Macintosh Centris series ⓘ linked to: Apple Macintosh Centris 650 Apple Macintosh Quadra series ⓘ linked to: Macintosh Quadra HP 9000 workstations ⓘ linked to: HP 9000 NeXT computers ⓘ linked to: NeXT Computer line Sun workstations ⓘ embedded systems ⓘ
variant	MC68040 ⓘ linked to: Motorola 68040 microprocessor MC68EC040 ⓘ linked to: Motorola 68040 microprocessor MC68EC040V ⓘ linked to: Motorola 68040 microprocessor MC68LC040 ⓘ linked to: Motorola 68040 microprocessor MC68LC040V ⓘ linked to: Motorola 68040 microprocessor

How these facts were elicited