Re: [stella] New idea for 6 channel music on the 2600

Subject: Re: [stella] New idea for 6 channel music on the 2600
From: Glenn Saunders <cybpunks2@xxxxxxxxxxxxx>
Date: Wed, 19 Sep 2001 08:43:44 -0700
At 03:43 AM 9/19/2001 -0500, you wrote:
The basic idea for this is to increment a phase accumulator for each channel every scanline and use the upper bits of it to select bytes from a waveform table; then add them to an accumulator, and finally output the results to the sound volume registers.

Updating the sound registers every scanline is what the DPC chip in Pitfall II does. So I know this kind of thing is possible, but having to sacrifice graphics by doing it all in software is quite a hit.




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