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PostPosted: Thu Feb 07, 2013 1:35 pm 
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So I just finished internalizing an SDIEC into my Commodore 64, as well as adding an S-video and 1/8" audio jack. Now it works great and I can loa things off of the SD card, but I am wondering if something is wrong with my SID. Some instruments seem extremely quiet - the intro to Sanxion, for example - while others are perfectly fine. Does anybody have a good known test PRG I could load to compare against a control group? I have two, and they both do the exact same thing, so it's hard to know if it's just how it's supposed to sound and I am not used to it, or what.

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PostPosted: Mon Mar 11, 2013 3:15 pm 
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I don't have a test PRG, but I have something else that might help.

Stone Oakvalley's Authentic SID Collection

A guy automated the recording of the entire HVSC v49 from three SID revisions: MOS 6581 2383 (which I think is an R2), MOS 6581R4 3387, and CSG 8580R5 2689. I can't clearly see the SID on your C64, but I think it says 1283, which means it's likely either an R2 or R3 (with the only significant change being protection for input pins, no changes to the filter section), so you'll want to compare your SID's output to the R2 files. All of the files are 224kbps mono CBR MP3, so they should play on just about anything that can handle basic MP3s.

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