Commodore 64 (C64) Dual SID Fix (Save the data bus!)

3,383 views · Published 18 August 2015 · 6:10 · Indexed 20 September 2026

Channel: GadgetUK - Retro Gaming Repairs & Mods · 2015 · Science & Technology

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A short mod on the Dual SID (SID2SID) board I recently added to my C64.  This mod is required or you stand to damage the data bus on either SID at some point in future - only if both SIDs are using the same chip select and base address (dual mono, psuedo stereo).

Special thanks to Dave Curran for helping simplify this fix.

On a standard SID2SID board it's not configured in such a way there will be a problem.

#commodore #c64 #dualsid #sid #diy

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