Re: [stella] Megacart Specs

Subject: Re: [stella] Megacart Specs
From: Eckhard Stolberg <Eckhard_Stolberg@xxxxxxxxxxxxxxxxxxxxx>
Date: Sun, 12 Apr 1998 14:14:03 +0200
At 21:39 11.04.98 -0700, you wrote:
>The idea is to make large amounts of ROM available (128KB) with the option
>to tack on some RAM and an even more optional battery backup.  I forget the
>numbers I quoted way back when, but I think the whole thing was gonna cost
>around $15 for a complete cartridge minus labels/docs.  And that was gonna
>come down a bit.  I think the cost of a ROM only cart was gonna be about
>$8.  But it's been a few months since I was working on costs.

OK, I just saw Randy's 4kb carts for $16 and thought adding more
ROM, RAM and bankswitching logic would exceed the $20-$25 limit,
that most people have for new games for classic systems. But if
the carts would be that cheap, they would be ideal for the Mortal
Kombat clone.

Do you have cheap develloper boards with RAM to load the game into,
or would I have to buy an expensive eprom emulator?

>One last thing...
>If anyone here has suggestions or requests for the document, or the spec
>itself, now is the time to make them...while it's still in development.

What isn't completely clear to me is, if the RAM banks are limited
to $f000, or if they can be mapped into all four banks.

If it isn't too complicated or expensive, a nice thing to add to
the board might be some sort of Pitfall2 extra chip support. I
think of something like you have one address, where you put in
a ROM bank number, and another address, that would give you
the next byte of that bank, everytime you read from it. That
would allow volume samples or more complex graphics like in 
Pitfall2. Would this be possible?

Thanks, Eckhard Stolberg

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