*The ceramic filter caps at C10+C11 in the C64 play an important part in the filter offset point – regardless of the actual fitted SID
The 6581 and 8580 SID chips differ from each other in several ways:[https://en.wikipedia.org/wiki/MOS_Technology_6581 Source]
*The original 6581 was manufactured using the older NMOS process, which used 12V DC to operate. The 6581 is very sensitive to static discharge and if they weren't handled properly the filters would stop working, explaining the large number of dead 6581s in the market.
*The 8580 was made using the HMOS-II process, which requires less power (9V DC), and therefore makes the IC run cooler. The 8580 is thus far more durable than the 6581. Also, due to more stable waveform generators, the bit-mixing effects are less noticeable and thus the combined waveforms come close to matching the original SID specification (which stated that they will be combined as a binary AND).
Finally, you could play it with hardware too, with an extension. Read about it on:
* [http://www.cpcwiki.eu/forum/amstrad-cpc-hardware/cpc-sid/ Bryce's CPCSID interface ]. Bryce never actually built the CPCSID, it only made it as far as a design concept on paper. [httphttps://www.cpcwiki.eu/forum/amstrad-cpc-hardware/new-amstrad-cpc-sound-board-(aka-sonique-sound-board)-sid-part-(wip)/ on CPCWiki forummsg114468/#msg114468 Source].* DaDMaN's Sonique Sound Board [http://www.cpcwiki.eu/forum/amstrad-cpc-hardware/new-amstrad-cpc-sound-board-%28aka-sonique-sound-board%29-sid-part-%28wip%29/ on CPCWiki forumDaDMaN's Sonique Sound Board], based on the SwinSID SID clone. You can hear how DaDMaN's interface sounds here: [https://soundcloud.com/david-donaire-s-nchez/sets/amstrad-cpc-sonique-sound/ Playlist on SoundCloud]* [https://github.com/lambdamikel/Speak-SID LambdaMikel's Speak&SID] Speak&SID can use the original 6581, the 8580, as well as modern re-implementations of the SID chip such as SwinSID or ARMSID.* [[RSF3|TMTLogic's RSF3]] The ARM chip emulates the SID.
According to [https://patents.google.com/patent/US4677890A/en Google patents for US4677890A], the patent for the SID chip is now expired.
*[https://youtu.be/fQU-WZZ67yM C64 SID vs Amiga Paula] [https://youtu.be/ioZRUVTKLx0 C64 SID vs Atari Pokey]
*[[Media:Mos 6581 sid.pdf|SID chip datasheet]] [https://www.waitingforfriday.com/?p=661 Web version]
*[http://www.sidmusic.org/sid/sidtech.html Technical SID documentation]*[https://github.com/libsidplayfp/SID_schematics/wiki SID internals documentation] [http://forum.6502.org/viewtopic.php?f=8&t=4150 Understanding the SID]
*[https://www.oxyron.de/html/registers_sid.html Oxyron SID reference]
*[https://ultimatesid.dk/ Ultimate SID Collection]
*[https://www.hvsc.c64.org/ High Voltage SID Collection]
*[https://youtu.be/Li-y42ie8-k Mix I] [https://youtu.be/b8ERcaXtK6E Mix II] [https://youtu.be/285q-PfYUYc Mix III] [https://youtu.be/NctPQfYFbI8 Mix IV] C64 Commodore music 1 hour*[https://www.wothke.ch/tinyrsid/index.php webSID] [https://deepsid.chordian.net/ DeepSID] Online SID chip emulatoremulators
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[[Category:Non CPC Computers]] [[Category:Music and sound|*]] [[Category:Electronic Component]]