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 -- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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