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Commodore 64 / Amiga soundchip musician and programmer from Norway. All music on this page contains recordings from Geir's own computers.

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… read more

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