Re: Innovative Amiga genlocking

From: silverdr_at_wfmh.org.pl
Date: Tue, 7 Nov 2017 10:27:50 +0100
Message-Id: <9B29CC57-B4CB-453A-9A41-18394A8C934F@wfmh.org.pl>
> On 2017-11-07, at 10:14, Pasi 'A1bert' Ojala <a1bert@iki.fi> wrote:
> 
> On 07.11.2017 11:00, Mia Magnusson wrote:
>> It was a long time ago, but IIRC I didn't need any software to flip those bits to input. 
> That is my recollection as well. GenLock would work straight up without special software.

So is mine - and that's why I started to realise that Mia may in fact be right. Of course if the external clock supply was software detectable then the bit could be automatically switched by KS for example. But if it is not (and Agnus doesn't do this internally because according to Gerrit it has no way to know it is being supplied from the outside) then there is really not many options left.

> I also remember well that grounding the HSYNC or VSYNC pins would freeze the video generation, and freeze the machine (because it would normally wait for vblank when blitting graphics).
> 
> Happened a few times during this http://www.iki.fi/a1bert/Dev/A2320/
> 
> How the time flies.. That was almost 16 years ago.

:-) Not *THAT* long ago in our today's understanding of time ;-)

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


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