RE: [stella] One Bit Sound?

Subject: RE: [stella] One Bit Sound?
From: "Robert Blazewicz" <blaze@xxxxxxx>
Date: Tue, 16 Feb 1999 06:47:23 -0500
Chris,

I don't know what is in Pitfall II, but I do know that the 7800 Ballblazer
cart has the Atari POKEY chip wired inside.

--Blaze

> -----Original Message-----
> From: owner-stella@xxxxxxxxxxx [mailto:owner-stella@xxxxxxxxxxx]On
> Behalf Of Chris Wilkson
> Sent: Thursday, February 11, 1999 7:57 PM
> To: stella@xxxxxxxxxxx
> Subject: Re: [stella] One Bit Sound?
>
> > Sorry, I've bin posting nonsense again. Of course this method will not
>
> Yeah...me too.  The way the 2600 is set up, you'll get a total of
> 31 possible
> values, assuming that the transistors are well matched.  This is one value
> short of 5 bits.  Note that these values aren't quite linear.  I
> forget which
> way the curve goes, but I do remember seeing it on my o'scope a couple of
> years ago...
>
> Glenn,
>
> Every once in a while you mention the DPC chip in Pitfall II.
> Did you ever
> manage to snag docs for that beastie?  If so, or if someone is willing to
> document *in detail* the way it works (Bradford??) I'd like to try my hand
> at recreating it.  First in discrete logic, but finally in VLSI...a direct
> implementation in silicon.  I don't know that it would be useful, but it
> might be fun to try.
>
> Also, does anyone know of a source for this chip?  Who made it?
> Who sells it?
> What's the official part number?  Etc...
>
> -Chris


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