C64Music!

Commodore 64 Music in the real world & other related SID stories

Sunday, November 01, 2009

More Soundchip Hacking: Realtime SID delay

The Norwegian composer Geir Tjelta has introduced a new trick for the SID-chip: realtime delay. The output of the third channel of the SID can be recorded, and by delaying the playback of the sample on the “virtual” fourth channel, you get a subtle echo. This routine doesn’t use much CPU-time either. A nice and elegant trick. Get the exe and mp3 here. It needs to run on the old 6581 chip, since this technique for playing samples relies on a bug that was almost fixed with the new 8580 chip.... Read more

via ChipFlip

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