Re: [stella] Stella 2.0 Alpha 3 available

Subject: Re: [stella] Stella 2.0 Alpha 3 available
From: "atari2600" <atari2600@xxxxxxxxxxxxx>
Date: Sun, 3 Jul 2005 23:39:17 -0400
I don't have a testbed binary handy (I'm still on holiday in the USA), but the
information in that post about the 3E format was mostly correct.  The only
glaring error I can see is that switching in a ROM bank via write to 3F
actually switches in a 2K ROM bank, not 1K.  The 2K area occupies the same
address space as the read and the write areas of the 1K RAM bank similarly
switched in by a 3E write.  To write to RAM, write to address+$400.

-------Original Message-------
> From: "B. Watson" <atari@xxxxxxxxxxxxxx>
> Subject: Re: [stella] Stella 2.0 Alpha 3 available
> Sent: 03 Jul 2005 20:27:13
>  On Sun, 3 Jul 2005, atari2600 wrote:
>  > I would like to check this out on Boulder Dash (R) -- but I'm
>  > wondering... does Stella handle 3E bankswitching?
>  Apparently not: there's no Cartridge3E class and no mention of the string
>  "3E" in the source anywhere.
>  If you can point me to a web page or something with a good description
>  of the 3E scheme, I'll (attempt to) add support for it. Actually I
>  found your original post about it:
>  There may be enough information there... Though it'd be nice to have at
>  least one ROM image that uses 3E, so I can test my code. Apparently you
>  can't just send me your binary for copyright reasons, but maybe early
>  on in your work you wrote a test ROM that just switches banks and does
>  something like display different colors in the different banks...?
>  Also, you'll probably have to generate your own entry for
>  your binaries: I don't know if I'll be able to auto-detect 3E mode.
>  --
>  B.
>  Archives (includes files) at
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-------Original Message-------
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