Subject: Re: [stella] some questions about the a2600 From: Erik Mooney <emooney@xxxxxxxxxxxxxxxx> Date: Wed, 26 May 1999 15:00:56 -0400 (EDT) |
> > Actually, $FFFE is the BRK vector. MOst games simply use this vector to store > > 2 more bytes of data. But it seems like there was one that actually uses a BRK. > > Can anyone help out here? > > if the instruction BRK really does transfer control to the address indicated at > $FFFE, and the address at $FFFE is altered, perhaps that could be used for er, $FFFE is located in ROM space... good luck modifying the address there :) > thanks all the same, but i am just beginning to understand the mess > that we call 6502 assembly :) and i know about as much about 6502 assembly is pretty clean (especially on this interruptless machine) compared to stuff like x86 assembly. > electronics as i do fixing cars, so i dont know if i could ever make > an actual rom/eprom/whatever of any game without either > figuring out how the 2600 handles cartridges hardware-wise or > getting some outside help :P What you need is a Supercharger.. if you don't know about it and want a quick rundown, post back and I'm sure someone will help :) -- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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