Re: [stella] 2600 on-a-Chip new site

Subject: Re: [stella] 2600 on-a-Chip new site
From: "Carlos Lopez" <carlosflr@xxxxxxxxxxxxxxxx>
Date: Thu, 22 Aug 2002 17:03:41 -0500
> I had had some ideas that would, I think, not take a whole lot of
> silicon or discrete components and would make it a device I'd be more
> likely to use.
> a) RS-232 interface, so we could download a game from our PCs rather
>     than simply loading it via the cartridge slot; this would also take
>     a bit of logic to recognize the different bankswitching formats and
>     implement them, but not a whole lot.  The Cuttle Cart does this.
> b) A/D converter and audio interface.  Same argument, but for
>     Supercharger games and/or WAV/MP3 versions of games.  Again, done by
>     the Cuttle Cart.
> c) Built-in "Cheetah"-like functionality.  Look at Bob Colbert's pages.
>     Basically, once you've loaded a game, zap the bytes in it to modify
>     its behavior; kind of a tiny hex editor written in 6502 assembly,
>     letting you modify the memory contents.  If either a or b is
>     implemented, it's really not necessary, but it's a cool hack.
> d) Composite video out, stereo audio out.  It looks like you're already
>     planning this.
> e) Multicart support.  RAM is pretty cheap.  A smallish interface that
>     let you load multiple games into RAM (with a or b above) and then
>     select among them would make this design a little more useful when
>     divorced from a VCS cartridge library.
> f) Some sort of mechanism for debugging.  Since all the VCS hardware is
>     emulated anyway, it seems like it shouldn't be that hard to
>     externalize some interface to it for the use of homebrewers who
>     want, effectively, a VCS hardware debugger.  I haven't given much
>     thought to this, so I might just be babbling.

It really would be interesting to include this and other features in the
design. I hope I have enough free time to finish it soon!!!

Carlos Lopez

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