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Re: Can I use a US motherboard in my European Apple IIe?
- Subject: Re: Can I use a US motherboard in my European Apple IIe?
- From: "Michael J. Mahon" <mjmahon@aol.com>
- Date: 18 Sep 2005 00:38:02 -0700
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Knut wrote:
>The best result was with a CGA 5153 monitor. I had to invert the sync
>(composite sync applied to hsync in the CGA) but apart from that it is
>just to match pin to pin on the from the 15pin of the Apple to the 9pin
>of the CGA. The problem with this CGA is that even if it is a european
>monitor it does 60Hz and the picture rolls with the 50Hz signal form the
>Apple.
A CGA monitor also requires a vertical sync signal on pin 9.
You will need a chip to separate out the vertical sync signal from
composite sync and deliver it to the monitor. This chip will require
power, which is available on the Apple II side.
-michael
Music synthesis for 8-bit Apple II's
http://members.aol.com/mjmahon