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Re: complete list of 6522/AY8910 registers ? (mockingboard)



On Wednesday, September 12, 2012 2:20:17 PM UTC-5, (unknown) wrote:
> On Wednesday, September 12, 2012 12:14:32 PM UTC-7, (unknown) wrote:
> 
> 
> 
> > 6522 Chip #1, 
> 
> > -------------
> 
> > add register # to $CX00, where X = slot # card is in
> 
> > 
> 
> > IE, $C40A = Card in Slot4, 6522 #1 SR Shift Register
> 
> > 
> 
> > 
> 
> > 6522 Chip #2,
> 
> > ------------- 
> 
> > add register # to $CX80, where X = slot # card is in
> 
> > 
> 
> > IE, $C58C = Card in Slot5, 6522 #2 PCR Peripheral Control Register

And just to make it more fun, the AY chips themselves have their own registers which you use the ORA and ORB 6522 registers to access.  Let me tell you, it was oh so much fun to develop emulation of this.  (sarcasm.. ;-)

-B