MOS Technology SID: Difference between revisions

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== Let the buyer beware ==
== 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 [[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>
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 ==
== SID chip versions ==
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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" />
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 [http://sid.kubarth.com/sound_comparison.html SID sound comparison].''
''See also [https://web.archive.org/web/20121031133833/http://sid.kubarth.com/sound_comparison.html SID sound comparison].''


== Hardware emulation ==
== Hardware emulation ==
The [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>[http://www.swinkels.tvtom.pl/swinsid/ About SwinSID]</ref>
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 ==
== References ==
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* [http://kevtris.org/Projects/sid/remarked_sids.html Remarked SID Chips Sold as New]
* [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]
* Wikipedia:[http://en.wikipedia.org/wiki/MOS_Technology_SID MOS Technology SID]
* [http://sid.kubarth.com/ SID in-depth information page]
* [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]
* [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://www.linusakesson.net/chipophone/pages.php Chipophone]
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* [http://www.fpgasid.de/ FPGASID]
* [http://www.fpgasid.de/ FPGASID]
=== Projects ===
=== Projects ===
* [https://www.c64-wiki.com/wiki/SwinSID SwinSID], a hardware replacement of the SID.
⚫
* [http://www.ucapps.de/index.html MIDIbox SID V2]
⚫
* [https://web.archive.org/web/20110904044955/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.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://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 ===
=== Modules ===
* [https://web.archive.org/web/20130914034258/http://busycircuits.com/alm003/ ALM003 – SID GUTS]
* [https://web.archive.org/web/20130914034258/http://busycircuits.com/alm003/ ALM SID Guts]
* [https://busycircuits.com/alm012/ ALM Sid Guts Deluxe]

=== Video ===
=== Video ===
* [https://www.imdb.com/title/tt8391642/ The Chiptune Story]
* [https://www.imdb.com/title/tt8391642/ The Chiptune Story]

Latest revision as of 11:21, 11 November 2023

MOS SID 6582

The MOS Technology 6581/8580 or SID (Sound Interface Device) is the built-in Programmable Sound Generator chip used in the Commodore 64 and Commodore 128 home computers in the 1980s.[1]

Development

The SID was devised by engineer Robert "Bob" Yannes, who later co-founded the Ensoniq Corporation.[1]

Let the buyer beware

Since 6581 and 8580 SID ICs 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 filter, but some also have defective channels/noise generators, and some are completely dead.[2]

SID chip versions

The first version was the 6581 followed by the 8580, (in the later flat grey Commodore C64C). The 6582 was sold as replacement for defective 8580s, and sounds very similar. The main difference is the supply voltage and filter caps. The 6581 takes 12V and requires 470pF caps while the 8580 and 6582 take 9V and require 22nF caps.[3]

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.[3]

See also SID sound comparison.

Hardware emulation

The 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.[4]

References

  1. ^ a b Wikipedia:MOS Technology SID
  2. ^ Remarked SID Chips Sold as New
  3. ^ a b Hardware Options, User Manual, MIDIbox SID V2
  4. ^ About SwinSID

External links

Projects

Modules

Video

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