Excited to present the final part of the Stereo SID project i'm doing! The SID2SID board by 8bitventures, with the Mssiah cartrdige. If you havent seen Part 1, you can watch it here: https://youtu.be/WqlpyVzvgyk The SID2SID mod is a way to add an extra SID chip in order to add three extra channels, totaling six, which can be used with the Mssiah software. However this mod by itself will not allow Stereo music from games despite having two SID chips in there. In this video I build the SID2SID mod. In part two, I will modify it so that it can use two different SID chips , the old 6581 and the newer 8580 simultaneously as well as having each of them work at the same time for each speaker channel. Subscribe here: http://www.youtube.com/channel/UCSlMemxuBOFu6Rz_Al02nHQ?sub_confirmation=1 Support me on Patreon: https://www.patreon.com/msmadlemon GadgetUK164's SID video: https://youtu.be/jjKwHpvwLF4 Dave Curran / Tynemouth Software's website: http://www.tynemouthsoftware.co.uk/ And his Dual SID board: http://blog.tynemouthsoftware.co.uk/search?q=SID My Blogpost at 'Vintage is the new old' http://www.vintageisthenewold.com/?p=41713&preview;=true My Commodore 64 videos: https://www.youtube.com/playlist?list=PLTfPIrcIusfniph_sMyL2Mc4_MCRMRE2n My Amiga videos: https://www.youtube.com/playlist?list=PLTfPIrcIusflb3Giog5xbDT74GYc7tTso My Nostalgia Time videos: https://www.youtube.com/playlist?list=PLTfPIrcIusflWiQpcDbEcAt1Yc6Yw3zVv My Vintage Repair videos: https://www.youtube.com/playlist?list=PLTfPIrcIusfnWxl0PsKknE8dql0tDzNCU My Audio related videos: https://www.youtube.com/playlist?list=PLTfPIrcIusfmkHzORpoQjmAn6KTqiWP3j Chillout time, Talks, vlog: https://www.youtube.com/playlist?list=PLTfPIrcIusfmZ7Z69wAxN7pECJN4popq9 My ASMR-esque videos: https://www.youtube.com/playlist?list=PLTfPIrcIusfn6deAoKDe0mz-WKTxX2F12 My Electronics videos: https://www.youtube.com/playlist?list=PLTfPIrcIusfnsJdbi0nbrEsjxT4D3gA8K More info about the SID chip (quoted from Wikipedia) "The MOS Technology 6581/8580 SID (Sound Interface Device) is the built-in Programmable Sound Generator chip of Commodore's CBM-II, Commodore 64, Commodore 128 and Commodore MAX Machine home computers. It was one of the first sound chips of its kind to be included in a home computer prior to the digital sound revolution. Together with the VIC-II graphics chip, the SID was instrumental in making the C64 the best-selling computer in history,[1] and is partly credited for initiating the demoscene.[citation needed] The SID working principle was protected by U.S. Patent 4,677,890, which was filed on February 27, 1983, and issued on July 7, 1987. The patent expired on July 7, 2004. The SID was devised by engineer Robert "Bob" Yannes, who later co-founded the Ensoniq digital synthesizer company. Yannes headed a team that included himself, two technicians and a CAD operator, who designed and completed the chip in five months, in the latter half of 1981. Yannes was inspired by previous work in the synthesizer industry and was not impressed by the current state of computer sound chips. Instead, he wanted a high-quality instrument chip, which is the reason why the SID has features like the envelope generator, previously not found in home computer sound chips.[2][3] I thought the sound chips on the market, including those in the Atari computers, were primitive and obviously had been designed by people who knew nothing about music.[3] — Robert Yannes, On the Edge: The Spectacular Rise and Fall of Commodore Emphasis during chip design was on high-precision frequency control, and the SID was originally designed to have 32 independent voices, sharing a common oscillator.[clarification needed][3] However these features could not be finished in time, so instead the mask work for a certain working oscillator was simply replicated three times across the chip's surface, creating three voices each with its own oscillator. Another feature that was not incorporated in the final design was a frequency look-up table for the most common musical notes, a feature that was dropped because of space limitations.[4] The support for an audio input pin was a feature Yannes added without asking, which in theory would have allowed the chip to be used as a simple effect processor. The masks were produced in 7-micrometer technology to gain a high yield; the state of the art at the time was 6-micrometer technologies. The chip, like the first product using it (the Commodore 64), was finished in time for the Consumer Electronics Show in the first weekend of January 1982. Even though Yannes was partly displeased with the result, his colleague Charles Winterble said: "This thing is already 10 times better than anything out there and 20 times better than it needs to be."