On Fri, 12 Jul 2002, Clay Halliwell wrote:
> ----- Original Message -----
> From: "Roger Williams" <mer02@xxxxxxxxxxxxx>
> To: <stella@xxxxxxxxxxx>
> Sent: Thursday, July 11, 2002 11:09 PM
> Subject: Re: [stella] Nick's PlayField Graphics Demo: Question
>
>
> > PIA registers are mapped $280-$2FF.
>
> > The 6807 only has 13 external address lines
>
> I think you mean "RIOT" and "6507" here, respectively.
Yep 6507. Is there such a thing as a 6807? I'm sure there is.
But who'd want one with the 6809 kicking around? Or the 6309 for
that matter. But I digress.
"RIOT" is a later, slang term for the Peripheral Interface Adapter,
or PIA. But there are several classic chips that have the PIA acronym,
so RIOT is maybe better. And it's certainly what people around here
use.
-Chris
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