[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Unknown AII Card
- Subject: Re: Unknown AII Card
- From: dog_cow@macgui.com (D Finnigan)
- Date: Fri, 13 Apr 2012 21:14:56 +0000 (UTC)
- Newsgroups: comp.sys.apple2
- Organization: Mac GUI
- References: <jm9t3a$rm7$1@newsreader4.netcologne.de>
- User-agent: Mac GUI City Usenet Posting
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 $Cxxx Apple
II slot I/O address space.
--
]DF$
Mac GUI Vault - A source for retro Apple II and
Macintosh computing.
http://macgui.com/vault/