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Re: Unknown AII Card
- Subject: Re: Unknown AII Card
- From: Patrick Schaefer <pa.schaefer@web.de>
- Date: Sat, 14 Apr 2012 14:38:57 +0200
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- Newsgroups: comp.sys.apple2
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Am 13.04.2012 20:59 schrieb Andre Bryx:
Does anyone know this unknown card?
http://8bitcomputer.de/bilder/A2Unknown_1.JPG
http://8bitcomputer.de/bilder/A2Unknown_2.JPG
This is an A/D converter card. The ZN427 is an 8bit A/D converter, the
4051 is a 8-to-1 multiplexer, there are some amplifiers and a 6522 VIA
for timing and bus interfacing.
As there is no name or company logo on the board, you'll have to draw a
schematic to figure out the operation.
Patrick