Re: Playing samples on both new and old SIDs

From: Marko Mäkelä (
Date: 2000-08-06 15:52:54

On Mon, 31 Jul 2000, Richard Atkinson wrote:

> I looked at them in BASIC a few years ago but have never 'sampled' them
> properly. With an REU it is possible to sample 512K of data without
> interruptions at 256 byte boundaries

I've looked at the combined waveforms by sampling the OSC3 register every
16 or 32 cycles (I don't remember; anyway, I wrote the sampling loop so
that crossing 256-byte boundaries made no difference in the sampling
frequency).  At double waveform frequency, the output changes at double
speed; there are no irregularities.  The cycles of the waveforms were 512
bytes, unless I remember wrong.  This information is for the 6581; I
haven't tested the new SID.

So, there's no need to have a REU to measure the waveforms.


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