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Re: If you were to put a graphics chip on an apple II card...

On Thursday, August 30, 2012 9:59:26 AM UTC-7, (unknown) wrote:
> On Wednesday, August 29, 2012 6:58:37 PM UTC-7, Sean Fahey wrote:
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> > On Wednesday, August 29, 2012 7:03:04 PM UTC-5, (unknown) wrote:
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> > > Looks like a good one to start with.  The Byte card looks simple enough..
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> > Would it be possible to combine the Byte Card with an audio card (similar to the Arcade Board) except something more popular that had software written for it - like the Mockingboard?
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> Possible?  Anything.
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> The 9918 doesn't need any address decoding, it has device select and RW which can be derived from the Apple II bus using simple 74xx logic.  There is no ROM.
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> Mockingboard...  I think it uses 6522 interface chip?  That wouldn't need any address decoding either.


Yes, http://en.wikipedia.org/wiki/File:Mockingboard_V1.jpg

Would be interesting to know how Arcade Board/ SuperSprite would address the chips seperately on a single card.  I haven't looked at the 6522 datasheet in a while.

Rich