Texas Instruments SN76489

E201693
programmable sound generator sound chip

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.

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All labels observed (7)

Label Occurrences
Texas Instruments SN76489 canonical 3
Texas Instruments SN76489 PSG 2
General Instrument AY-3-8912 1

Statements (48)

Predicate Object
instanceOf programmable sound generator ⓘ
sound chip ⓘ
alsoKnownAs Texas Instruments SN76489 ⓘ
surface form: SN76489A

Texas Instruments SN76489 ⓘ
surface form: SN76496-compatible PSG
audioGenerationMethod tone counters and dividers ⓘ
audioOutput mono ⓘ
bitWidth 4-bit volume control ⓘ
category Texas Instruments ⓘ
surface form: Texas Instruments mixed-signal integrated circuits
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 ⓘ
surface form: BBC Micro (variants)

ColecoVision ⓘ
IBM PCjr ⓘ
Sega Game Gear ⓘ
surface form: Sega Game Gear (compatible core)

Sega Master System ⓘ
SG-1000 ⓘ
surface form: Sega SG-1000

TI-99/4A ⓘ
surface form: TI-99/4A home computer

Tandy 1000 series (compatible PSG) ⓘ
volumeLevels 16 discrete volume steps ⓘ

Referenced by (10)

Full triples — surface form annotated when it differs from this entity's canonical label.

Sega Mega Drive → soundChip → Texas Instruments SN76489 ⓘ
Atari ST → soundChip → Texas Instruments SN76489 ⓘ
this entity surface form: Yamaha YM2149F PSG
Amstrad CPC → soundChip → Texas Instruments SN76489 ⓘ
this entity surface form: General Instrument AY-3-8912
Texas Instruments SN76489 → alsoKnownAs → Texas Instruments SN76489 ⓘ
this entity surface form: SN76489A
Texas Instruments SN76489 → alsoKnownAs → Texas Instruments SN76489 ⓘ
this entity surface form: SN76496-compatible PSG
Sega Master System → soundChip → Texas Instruments SN76489 ⓘ
this entity surface form: Texas Instruments SN76489 PSG
Sega Genesis Model 2 → soundChip → Texas Instruments SN76489 ⓘ
this entity surface form: Texas Instruments SN76489 PSG
BBC Micro → soundChip → Texas Instruments SN76489 ⓘ
BBC Micro in 1981 → soundChip → Texas Instruments SN76489 ⓘ
subject surface form: BBC Micro
Acorn Electron → soundChip → Texas Instruments SN76489 ⓘ
this entity surface form: Texas Instruments SN76489-compatible