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Re: ALF AMII Clone

On Sunday, March 10, 2013 5:28:23 PM UTC-7, Steve Nickolas wrote:
> On Sun, 10 Mar 2013, Phil Tubb wrote:
> 
> 
> 
> > The Mockingboard used the AY-3-8910 chips, which have an error in the 
> 
> > waveform they produce, resulting in anything from popping noises (with 
> 
> > slow volume changes) to inappropriate low frequencies (with fast volume 
> 
> > changes, as is typical for "envelope" control).  If you download the 
> 
> > Sept 1981 issue of Creative Computing from archive.org
> 
> 
> 
> I wonder if the YM-2149 fixes that.
> 
> 
> 
> -uso.

Hard to tell from the Yamaha data sheet. From the first waveform screenprint, it appears to not be fixed.  The second waveform screenprint is illegible.