Posted By
MMS
on 2018-07-03
14:19:51
 |  Re: Oscilloscope for TED?
From HW wise I think it is not possible what we see on the SID.
The internal circuit is not accessible, and the 3 channels are mixed together inside the SID, and there is one single audit output. So it is not possible to connect 3 scopes to the SID legs and show the channles separately.
As told, from a SW it is possible. In fct, not for the player. Creating the waveform graphical shape could be easy on Plus/4 (square), but even on +4 to faithfully draw noise, is a challnge. The SW itself knows, what frequencies used, and even some players capable to show some volume meters. (I do remember my Pentium I 133MHz had some troubles to show the frequency curves during mp3 playback, due to CPU limit)
What we saw on the video is most probably (as told before) is a modified emulator. It is really fun to see the major difference of triangle, square and other waveform VS digidrums. (I suppose they are not just simple noise waveforms)
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