Texas Instruments SN76477

The Texas Instruments SN76477 "complex sound generator" is a sound chip produced by Texas Instruments. It was originally produced in 1978 [ [http://mkv.itm.miun.se/personal/per/diy/76477/sn76477datasheet.pdf Type SN76477 Complex Sound Generator] - Texas Instruments Bulletin No. DL-S 12612, July 1978. (The datasheet)] but has since been discontinued. It was typically used as a sound effects generator in arcade games and toys. The following quotation summarises its facilities:

The use of the SN76477 in a musical context was limited by the fact that it was difficult to electronically control the pitch of the produced sound [http://mypeoplepc.com/members/scottnoanh/birthofasynth/id22.html SN-Voice] discussion of the SN Voice synthesiser] .

There were two different sizes of the SN76477 available. The SN76477N was in a standard 0.6in (15.24mm) width dual in-line package (DIP). The SN76477NF was in a less common 0.4in (10.16mm) width DIP.

Uses

Uses of the SN76477 include the following devices:
* Arcade games:
** Space Invaders [ [http://www.darkpact.com/proj/siemu/is/report2.pdf 8080a Simulation: Space Invaders] - a report on writing an emulator for Space Invaders]
** Stratovox
** Vanguard
* Educational toys:
** Gakken EX-System synthesiser
* Electronic musical instruments:
** Axesynth
** SN-Voice - a DIY synthesizer design by Thomas Henry
* Home computers:
** ABC 80

Notes

External links

* [http://mkv.itm.miun.se/personal/per/diy/76477 A collection of articles on the chip]