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Line 6: == Let the buyer beware == Since 6581 and 8580 SID [[IC]]s are no longer produced, they have become highly sought after. In late 2007, various defective remarked SIDs started appearing on eBay as supposedly new chips. All of these remarked SIDs have a defective [[Voltage controlled filter\|filter]], but some also have defective channels/noise generators, and some are completely dead.<ref>[http://kevtris.org/Projects/sid/remarked_sids.html Remarked SID Chips Sold as New]</ref> == SID chip versions == Line 13: There are also sound differences. The filter of the 6581 sounds more moody and dirty, while the 8580/6582 filter sounds more precisely. Resonance has nearly no effect on the 6581, some mixed waveforms are not working, and it has a much higher background noise. The 8580/6582 is normally the preferred choice.<ref name="um" /> ''See also [https://web.archive.org/web/20121031133833/http://sid.kubarth.com/sound_comparison.html SID sound comparison].'' == Hardware emulation == The [https://web.archive.org/web/20140722224348/http://www.swinkels.tvtom.pl/swinsid/ SwinSID] is designed to be a pin compatible replacement module for both versions of the SID IC. Based on the [[Atmel AVR]] [[microcontroller]] It does not sound exactlty the same as either of the original ICs.<ref>[https://web.archive.org/web/20140722224348/http://www.swinkels.tvtom.pl/swinsid/ About SwinSID]</ref> == References == Line 24: * [http://kevtris.org/Projects/sid/remarked_sids.html Remarked SID Chips Sold as New] * Wikipedia:[http://en.wikipedia.org/wiki/MOS_Technology_SID MOS Technology SID] * [https://web.archive.org/web/20130521112326/http://sid.kubarth.com/ SID in-depth information page] * [https://web.archive.org/web/20120226010021/http://soundprogramming.net/electronics_reference/manuals/6581datasheet.pdf Commodore SID 6581 Datasheet] * [http://www.linusakesson.net/chipophone/pages.php Chipophone] * [http://ilesj.wordpress.com/2010/07/01/how-to-identify-c64-and-sid-model/ How to identify C64 and SID model] * [http://www.fpgasid.de/ FPGASID] === Projects === * [https://www.c64-wiki.com/wiki/SwinSID SwinSID], a hardware replacement of the SID. * [http://www.ucapps.de/index.html MIDIbox SID V2]▼ * [http://wiki.forskningsavd.se/index.php/SIDblaster SIDblaster]▼ * [http://www.hypersynth.com/hypersid.html HyperSID]▼ * [http://www.mikekohn.net/micro/sid_player.php Atmel ATmega168 MOS 6581 SID Player] ▲* [http://www.hypersynth.com/hypersid.html HyperSID] * [http://kaput.retroarchive.org/MIDI.html Interfacing a SID to the ATmega] ▲* [http://www.ucapps.de/index.html MIDIbox SID V2] * [http://www.bellesondes.fr/wiki/doku.php?id=sidaster SIDaster] ▲* [https://web.archive.org/web/20110904044955/http://wiki.forskningsavd.se/index.php/SIDblaster SIDblaster] === Modules === * [https://web.archive.org/web/20130914034258/http://busycircuits.com/alm003/ ~~ALM003 –~~ALM SID ~~GUTS~~Guts] * [https://busycircuits.com/alm012/ ALM Sid Guts Deluxe] === Video === * [https://www.imdb.com/title/tt8391642/ The Chiptune Story]