Re: Unknown AII Card

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

D Finnigan wrote:
> Andre Bryx wrote:
>
> > Does anyone know this unknown card?
> >
> > http://8bitcomputer.de/bilder/A2Unknown_1.JPG
> > http://8bitcomputer.de/bilder/A2Unknown_2.JPG
> >
> > Thanks in advance
> > Andre
>
>
> Looks like an interface card to control some equipment. Perhaps for data
> acquisition.
>
> Of course there is an 6522 Versatile Interface Adapter for providing I/O
> ports. I see that there's also an 4051B IC, which is an analog multiplexer.
> Then there's a TL082 op amp. I don't see any on-board firmware.
>
> My guess is that this card accepts analog input from some equipment,
> converts it to digital signals, then provides the values in the $Cxxx Apple
> II slot I/O address space.

I agree--it has a pretty substantial analog section.

-michael

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