Re: RFC : Apple II DMA for free.

["bieling@terra.es" <bieling@terra.es>]

On Mar 26, 9:15 pm, aiiad...@gmail.com wrote:
> On Mar 24, 10:19 am, georg.biel...@gmail.com wrote:
>
> > I have tried to write down a way to get a free (in terms of memory
> > cycles) and easy to implement DMA channel on the Apple II.
>
> http://forum.6502.org/viewtopic.php?t=771
>
> Just another interesing 6502 hack...
>
> Rich

Yes. Multiple zero pages...
I wonder, wouldn't you prefer to have them layered one on top of the
other,
instead of disseminated all around the memory map ?

BTW, surfing around I came across this nice and very detailed block
diagram of the 6502:

<http://homepage.mac.com/jorgechamorro/a2things/6502.jpg>

(so nice that it has become the background of my a2 entry web page...
8-)

Jorge.