Re: innovative Amiga genlocking

From: silverdr_at_wfmh.org.pl
Date: Tue, 7 Nov 2017 17:18:44 +0100
Message-Id: <E1D645EB-2BDD-4868-8BD4-D572744690B0@wfmh.org.pl>
> On 2017-11-07, at 16:13, smf <smf@null.net> wrote:
> 
> On 06/11/2017 16:13, Mia Magnusson wrote:
>> Atleast on the oldest Amigas, I.E. A1000 and the first A2000, the
>> 28MHz switch/input stuff is handled by discrete logic and there is no
>> way for Agnus to see where the 28MHz clock comes from.
>> 
> I wrote another post, but it seems like hsync/vsync can be provided externally and kickstart detects it by disabling the internal generation and seeing if registers change.

Hm, so it is in fact done by KS as I was suspecting but it doesn't even need to detect the external clock. It's enough to detect external sync pulses.. clever. I believed clock to be the primary driver. Now I would really like to be 100% sure. Anyone with an Amiga and a working genlock willing to verify this on a real hardware?

-- 
SD! - http://e4aws.silverdr.com/


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Received on 2017-11-07 17:00:03

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