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pt3: update FAQ

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Vince Weaver 2019-05-18 11:12:16 -04:00
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@ -7,6 +7,24 @@ A. Yes, though you need a Mockingboard in Slot 4 to hear the music.
You probably need 48k of RAM too.
Q. Why does the audio sound scratchy on some songs (on real hardware)?
A. I've spent a lot of time trying to track this down.
In the perfect world of emulators, chiptune music on the Mockingboard
sounds great.
However, on real hardware, it doesn't. It's almost that some combination
of writes to the register cause a timer to wait 2^16 cycles before
updating, leading to glitches in the music. Possibly it's easier
to trigger this on the 1MHz Mockingboard than on the 1.77MHz
Spectrum (or the 2MHz ST) a lot of the music was written on.
The problem is more noticible on some songs than others.
Also I think some audio amplifiers have more trouble amplifying the
square wave signal put out by the AY-3-8910.
Q: Can you fit more than 18 songs on the disk?
A: Yes, it depends on how complex the PT3 files are.