Editing MOS Technology 6581 (section)

{{Short description|MOS Technology sound chip}}
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[[Image:SID chips.jpg|thumb|MOS Technology SIDs. The left chip is a 6581. The right chip is an 8580. CSG stands for Commodore Semiconductor Group. The numbers 3884 and 0692 are in WWYY form, i.e. the chips were produced week 38 of 1984 and week 06 of 1992. The last number is assumed to be a batch number.]]

The [[MOS Technology]] 6581/8580 '''SID''' ('''Sound Interface Device''') is the built-in [[programmable sound generator]] chip of the [[Commodore CBM-II]], [[Commodore 64]],<ref name="C64Ref">{{cite book|url=http://www.classiccmp.org/cini/pdf/Commodore/C64%20Programmer's%20Reference%20Guide.pdf |title=Commodore 64 Programmer's Reference Guide |chapter=6581 Sound Interface Device (SID) Chip Specifications |edition=1 |location=Wayne, Pennsylvania |publisher=Commodore Business Machines, Inc. |year=1982 |page=457 |isbn=9780672220562 |url-status=live |archive-url=https://web.archive.org/web/20190705125534/http://www.classiccmp.org/cini/pdf/Commodore/C64%20Programmer's%20Reference%20Guide.pdf |archive-date=2019-07-05 |access-date=2019-07-05 }}</ref> [[Commodore 128]], and [[MAX Machine]] [[home computer]]s.

Together with the [[MOS Technology VIC-II|VIC-II]] graphics chip, the SID was instrumental in making the C64 the best-selling home computer in history,<ref name="CNN 2011-05-09">{{cite news |last=Griggs |first=Brandon |url=http://edition.cnn.com/2011/TECH/gaming.gadgets/05/09/commodore.64.reborn/index.html |title=The Commodore 64, that '80s computer icon, lives again |work=[[CNN]] |date=2011-05-09 |url-status=dead |archive-url=https://web.archive.org/web/20190704124841/http://edition.cnn.com/2011/TECH/gaming.gadgets/05/09/commodore.64.reborn/index.html |archive-date=2019-07-04 |access-date=2014-11-17 }}</ref> and is partly credited for initiating the [[demoscene]].