Apple Macintosh ROM
E201699
Apple Macintosh ROM is the built-in firmware of classic Macintosh computers that provides low-level hardware control and system startup routines used by operating systems and emulators.
All labels observed (8)
| Label | Occurrences |
|---|---|
| Apple Macintosh ROM canonical | 1 |
| Macintosh IIci ROM | 1 |
| Macintosh ROM | 1 |
| Macintosh ROM / System software | 1 |
| Macintosh Toolbox ROM | 1 |
| Macintosh boot ROM | 1 |
| Macintosh startup chime and error tones | 1 |
| Macintosh system ROM | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1774987 — 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: Apple Macintosh ROM Context triple: [NetBSD/mac68k, requiresFirmware, Apple Macintosh ROM]
-
A.
Macintosh 512K
Macintosh 512K is an early Apple personal computer released in 1985 that expanded the original Macintosh’s memory and storage capacity, making it more practical for business and productivity use.
-
B.
original Macintosh 128K
The original Macintosh 128K was Apple’s first mass-market personal computer with a graphical user interface and mouse, introduced in 1984 and known for its compact all-in-one design.
-
C.
Macintosh SE
The Macintosh SE is a compact all-in-one personal computer introduced by Apple in 1987, notable for adding an internal expansion slot and improved performance to the classic Macintosh line.
-
D.
Macintosh LC
The Macintosh LC is a low-cost, compact desktop computer introduced by Apple in 1990 as part of its early color-capable Macintosh lineup aimed at home and education markets.
-
E.
Apple 5.25" floppy disk drive
The Apple 5.25" floppy disk drive is a vintage external disk drive used primarily with early Apple II-series computers for reading and writing 5.25-inch floppy disks.
- 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: Apple Macintosh ROM Target entity description: Apple Macintosh ROM is the built-in firmware of classic Macintosh computers that provides low-level hardware control and system startup routines used by operating systems and emulators.
-
A.
Macintosh 512K
Macintosh 512K is an early Apple personal computer released in 1985 that expanded the original Macintosh’s memory and storage capacity, making it more practical for business and productivity use.
-
B.
original Macintosh 128K
The original Macintosh 128K was Apple’s first mass-market personal computer with a graphical user interface and mouse, introduced in 1984 and known for its compact all-in-one design.
-
C.
Macintosh SE
The Macintosh SE is a compact all-in-one personal computer introduced by Apple in 1987, notable for adding an internal expansion slot and improved performance to the classic Macintosh line.
-
D.
Macintosh LC
The Macintosh LC is a low-cost, compact desktop computer introduced by Apple in 1990 as part of its early color-capable Macintosh lineup aimed at home and education markets.
-
E.
Apple 5.25" floppy disk drive
The Apple 5.25" floppy disk drive is a vintage external disk drive used primarily with early Apple II-series computers for reading and writing 5.25-inch floppy disks.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
computer firmware
ⓘ
read-only memory ⓘ system ROM ⓘ |
| accessedBy | CPU at reset vector ⓘ |
| architecture |
Motorola 680x0
ⓘ
linked to:
Motorola 68000 family
|
| category |
Macintosh hardware
ⓘ
firmware for personal computers ⓘ |
| compatibleWith |
System 1
ⓘ
System 6 ⓘ System 7 ⓘ
linked to:
System 7 (early versions)
|
| contains | Motorola 68000 machine code ⓘ |
| developedBy | Apple Inc. ⓘ |
| hasVariant |
1 MB ROM
ⓘ
128K ROM ⓘ 512K ROM ⓘ IIci ROM ⓘ Quadra ROM ⓘ
linked to:
Quadra series
|
| introducedInYear | 1984 ⓘ |
| introducedWith | original Macintosh 128K ⓘ |
| nonVolatile | true ⓘ |
| provides |
QuickDraw routines
ⓘ
Toolbox routines ⓘ boot device selection logic ⓘ bootstrapping for Macintosh operating systems ⓘ exception handling ⓘ hardware initialization code ⓘ interrupt handling ⓘ low-level I/O routines ⓘ low-level hardware control ⓘ self-test routines ⓘ system startup routines ⓘ |
| replacedBy |
Mac OS ROM file
ⓘ
New World ROM ⓘ |
| requiredBy |
Basilisk II
ⓘ
Mini vMac ⓘ SheepShaver ⓘ vMac ⓘ |
| roleInSystem |
abstracts hardware for operating system
ⓘ
contains Happy Mac startup icon code ⓘ contains Sad Mac error icon code ⓘ contains startup chime code ⓘ provides Macintosh Toolbox in ROM ⓘ |
| storedOn | ROM chips on logic board ⓘ |
| usedBy |
Mac OS Classic
ⓘ
linked to:
Classic Mac OS
Macintosh System Software ⓘ
linked to:
Classic Mac OS
Macintosh emulators ⓘ |
| usedIn | classic Macintosh computers ⓘ |
| usedUntilApprox | late 1990s ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Apple Macintosh ROM Description of subject: Apple Macintosh ROM is the built-in firmware of classic Macintosh computers that provides low-level hardware control and system startup routines used by operating systems and emulators.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Apple Macintosh ROM
linked to: Apple Macintosh ROM
linked to: Apple Macintosh ROM
linked to: Apple Macintosh ROM
subject linked to:
contains Sad Mac error icon code
linked to: Apple Macintosh ROM
subject linked to:
contains Sad Mac error icon code
linked to: Apple Macintosh ROM
subject linked to:
contains Sad Mac error icon code
linked to: Apple Macintosh ROM