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PostPosted: Mon Mar 02, 2009 7:45 am 
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Joined: Mon Sep 27, 2004 8:33 am
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Location: Central Texas, USA
The pre-announcement of tepples' volume test set inspired me to write something as well (fortunately, we took different approaches so the two complement each other). The tests generally play tones with the channel under test, then manually generate the exact opposite waveform using the DMC DAC, so that they cancel out to silence if everything is correct. Included is ca65 source and recordings of them on a NES.

mixer_test2.zip


Last edited by blargg on Tue Mar 03, 2009 5:10 am, edited 1 time in total.

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PostPosted: Tue Mar 03, 2009 5:10 am 
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Location: Central Texas, USA
NSF builds added, and improved noise and triangle tests to verify more aspects of non-linearity:

mixer_test2.zip


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PostPosted: Wed Mar 04, 2009 10:50 pm 
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Location: Rive nord de Montréal
Very nice as always, blargg :)

Testing some NSF players now...


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