Texas Instruments SN76489
E201693
The Texas Instruments SN76489 is a classic programmable sound generator chip widely used in early home computers and game consoles to produce simple three-voice music and sound effects.
All labels observed (7)
| Label | Occurrences |
|---|---|
| Texas Instruments SN76489 canonical | 3 |
| Texas Instruments SN76489 PSG | 2 |
| General Instrument AY-3-8912 | 1 |
| SN76489A | 1 |
| SN76496-compatible PSG | 1 |
| Texas Instruments SN76489-compatible | 1 |
| Yamaha YM2149F PSG | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1774712 — 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: Texas Instruments SN76489 Context triple: [Sega Mega Drive, soundChip, Texas Instruments SN76489]
-
A.
Yamaha YM2612
The Yamaha YM2612 is a six-channel FM synthesis sound chip widely known for defining the distinctive music and audio of many 16-bit Sega Genesis/Mega Drive games.
-
B.
Fairlight CMI
The Fairlight CMI is a pioneering digital synthesizer and sampler from the late 1970s and 1980s that revolutionized music production with its groundbreaking sampling capabilities and computer-based interface.
-
C.
Original Amiga chipset (OCS)
The Original Amiga Chipset (OCS) is the first-generation custom graphics and sound hardware architecture used in early Commodore Amiga computers, renowned for its advanced multimedia capabilities in the mid-1980s.
-
D.
Roland TR-808 drum machine
The Roland TR-808 drum machine is a pioneering analog drum machine famed for its deep bass drum and distinctive synthetic percussion sounds that have profoundly shaped hip hop, electronic, and pop music.
-
E.
Atari 8-bit family
The Atari 8-bit family is a series of home computers released by Atari in the late 1970s and 1980s, known for their advanced graphics and sound capabilities for the time and a rich library of games and productivity software.
- 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: Texas Instruments SN76489 Target entity description: The Texas Instruments SN76489 is a classic programmable sound generator chip widely used in early home computers and game consoles to produce simple three-voice music and sound effects.
-
A.
Yamaha YM2612
The Yamaha YM2612 is a six-channel FM synthesis sound chip widely known for defining the distinctive music and audio of many 16-bit Sega Genesis/Mega Drive games.
-
B.
Fairlight CMI
The Fairlight CMI is a pioneering digital synthesizer and sampler from the late 1970s and 1980s that revolutionized music production with its groundbreaking sampling capabilities and computer-based interface.
-
C.
Original Amiga chipset (OCS)
The Original Amiga Chipset (OCS) is the first-generation custom graphics and sound hardware architecture used in early Commodore Amiga computers, renowned for its advanced multimedia capabilities in the mid-1980s.
-
D.
Roland TR-808 drum machine
The Roland TR-808 drum machine is a pioneering analog drum machine famed for its deep bass drum and distinctive synthetic percussion sounds that have profoundly shaped hip hop, electronic, and pop music.
-
E.
Atari 8-bit family
The Atari 8-bit family is a series of home computers released by Atari in the late 1970s and 1980s, known for their advanced graphics and sound capabilities for the time and a rich library of games and productivity software.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
programmable sound generator
ⓘ
sound chip ⓘ |
| alsoKnownAs |
SN76489A
ⓘ
linked to:
Texas Instruments SN76489
SN76496-compatible PSG ⓘ
linked to:
Texas Instruments SN76489
|
| audioGenerationMethod | tone counters and dividers ⓘ |
| audioOutput | mono ⓘ |
| bitWidth | 4-bit volume control ⓘ |
| category |
Texas Instruments mixed-signal integrated circuits
ⓘ
linked to:
Texas Instruments
|
| clockInput | external clock required ⓘ |
| controlInterface | parallel bus ⓘ |
| dataInput | serially latched from host bus ⓘ |
| era |
1980s
ⓘ
late 1970s ⓘ |
| generation | 8-bit and early 16-bit era ⓘ |
| hasChannelCount |
1 noise channel
ⓘ
3 tone channels ⓘ |
| hasFeature |
noise generation
ⓘ
programmable frequency ⓘ programmable volume ⓘ square wave tone generation ⓘ |
| hasNoiseModes |
periodic noise
ⓘ
white noise ⓘ |
| hasSuccessor | Yamaha YM2149 (as more advanced PSG in some systems) ⓘ |
| hasVoice | one shared noise voice ⓘ |
| hasVoices | three independent tone voices ⓘ |
| influenced | later PSG designs in game consoles ⓘ |
| logicFamily | TTL-compatible inputs ⓘ |
| manufacturer | Texas Instruments ⓘ |
| noiseSource | linear feedback shift register (LFSR) ⓘ |
| notableFor |
simple hardware music synthesis
ⓘ
widespread use in early video game audio ⓘ |
| outputType | analog audio ⓘ |
| packageType | DIP integrated circuit ⓘ |
| soundType | chiptune-style sound ⓘ |
| technology | digital logic with analog output stage ⓘ |
| typicalUse |
simple three-voice music
ⓘ
video game sound effects ⓘ |
| usedFor |
game consoles
ⓘ
home computers ⓘ |
| usedIn |
BBC Micro (variants)
ⓘ
linked to:
BBC Micro
ColecoVision ⓘ IBM PCjr ⓘ Sega Game Gear (compatible core) ⓘ
linked to:
Sega Game Gear
Sega Master System ⓘ Sega SG-1000 ⓘ
linked to:
SG-1000
TI-99/4A home computer ⓘ
linked to:
TI-99/4A
Tandy 1000 series (compatible PSG) ⓘ |
| volumeLevels | 16 discrete volume steps ⓘ |
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: Texas Instruments SN76489 Description of subject: The Texas Instruments SN76489 is a classic programmable sound generator chip widely used in early home computers and game consoles to produce simple three-voice music and sound effects.
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Texas Instruments SN76489
linked to: Texas Instruments SN76489
linked to: Texas Instruments SN76489
linked to: Texas Instruments SN76489
linked to: Texas Instruments SN76489
subject linked to:
BBC Micro in 1981
linked to: Texas Instruments SN76489