C64R SID Voltage – breadbox64.com
SID - C64-Wiki
SID2SID & Stereo SID Project – Vintage is The New Old
Chip level #Audio ic how to clear fault - YouTube
Sid | Hackaday
C-64 Workshop / Chips
Driving the SID chip: Assembly Language, Composition, and Sound Design for the C64 « G|A|M|E
Commodore 64 SID Chip Type 6581 or 8580 - Etsy
You Can Have My LM386s When You Pry Them From My Cold Dead Hands | Hackaday
Technical SID Information/Hardware Stuff
Nano SwinSID
Michael Kohn - sid player
Nerdly Pleasures: SID and DOS - Unlikely but True Bedfellows
The one page BASIC SID Benchmark.
SPI SID - Erwin Rol Software Engineering
armsid
C64 S-Video cable – the easy way, and with no SCART | ilesj's blog
Michael Kohn - sid player
Tynemouth Software: Commodore 64 Pseudo Stereo Dual SID boards
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Commodore SID 6581 Datasheet – Waiting for Friday
Commodore SID 6581 Datasheet – Waiting for Friday
