Subject: Re: Cross hatch card??
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From: "Roger Johnstone" <rpj@thinkapple.com>
Newsgroups: comp.sys.apple2
Date: Sat, 24 Jul 1999 21:46:24 +1200
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In article <932801911.084.11@news.remarQ.com>, "Jason Whorton"
<jason@microxl.com> wrote:


>Hello.  I am wondering what a cross hatch card made by Apple is for.  There
>is one on eBay at:
>
>http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=133106952
>
>If anyone knows what it is, please e-mail me or post it here.  I have never
>heard of one before.
>
>Thank you,
>Jason Whorton
>http://www.microxl.com/oldcomputers/main.html
>
>
>

Whatever it is, it's obviously a prototype or been modified! More likely a
prototype though, the model number is 6XX-XXXX.

From the name, dot cross hatch card, I think this is a stand alone device
used to generate test patterns for a monitor. The card has Apple Computer on
it, copyright 1986 and what appears to be a 15 pin D socket. My best guess
is this was made by Apple for testing the Apple IIgs RGB monitors.