Re: MockingBoard

["Michael J. Mahon" <mjmahon@aol.com>]

Steve wrote:
> Thanks Alex,
>
> That made knocking a project together a lot easier. Unfortunately it
> didnt work first time, but then again, ive never used a mocking board
> before.
>
> Does anyone know of any software that can use this board? Or any other
> generic test I can do? I noticed there are a few different models of
> mocking boards too.

There is a simple player on the disks.  It is interrupt-driven.

As you can see from the diagram, the 6522s are mapped into the
cards address space (ROM page, IIRC), and their ports directly
control the 8910--not much subtlety, just the chips.  ;-)

Although there were several Mockingboard models, including one for
the IIc, all those made for slotted Apples used exactly the same
interface for playing music.  (Speech models used different speech
chips, so all bets are off, there.)

> On Dec 11, 11:10 am, Mike <magin...@computist-project.net> wrote:
>
> > On Thu, 10 Dec 2009 02:36:08 -0800, Alex Freed <alex_n...@mirrow.com>
> > wrote:
> >
> >
> > > I've put some info here:
> > > http://alexfreed.com/FPGApple/mockingboard
> >
> > > Including Verilog AY-8910 implementation and disk images.
> >
> > > -Alex.
> >
> > Nice!  Thanks, Alex.
> >
> > - Mikehttp://6502lane.net


--
-michael

NadaNet and AppleCrate II: parallel computing for Apple II computers!
Home page: http://home.comcast.net/~mjmahon

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