Re: Echo II sound cards

[Exegete <millers@noneofyourbusiness.com>]

Michael J. Mahon wrote:

> Bill Garber wrote:
>
>
> > "Exegete" <millers@noneofyourbusiness.com> wrote in message
> > news:406454e9$1_5@corp.newsgroups.com...
> > : They use a 6522 to address two AY-3-8913 chips.
> > : If memory serves, that chip has three "voices" and a "white
> > noise"
> > : generator.
> >
> > Really?, I thought that was the Mockingboard.
> > I'm looking at an Echo IIb and it has none of
> > those chips. Of course I don't have a straight
> > Echo II so I can't really disagree.
>
>
> The Echo II has only the TI "Spean'n'Spell" synthesis chip,
> but can be used to play digitized sound and to make non-speech
> sounds, within limits.
>
> The Echo II+ has both the TI chip and two AY-3-8910's for
> Mockingboard capability.  (I don't know whether it was actually
> software compatible with the Mockingboard.)

MIchael,
I hadn't noticed the TI chip.
If I'm reading it right, it's a TSP5220CNL
But there's also a TI SN74LS92N - I assume that's a logic chip of some type.

Roy
> -michael
>
> Check out amazing quality sound for 8-bit Apples on my
> Home page:  http://members.aol.com/MJMahon/



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