Re: C65 on Ebay

Den Sat, 4 Nov 2017 18:54:10 +0100 skrev silverdr@wfmh.org.pl:
> > On 2017-11-04, at 18:08, smf <smf@null.net> wrote:
> > 
> >> Ah, OK - now I get you. Still, I find the claim that "you can't
> >> take an NTSC amiga and make it display a valid PAL signal, without
> >> modifying the hardware" definitely too broad. I wasn't modifying
> >> the hardware. In some cases I wasn't even opening the casing!
> >> Although AFAIR those weren't used for NTSC productions.
> > You might not have opened the case, but you supplied an alternate
> > system clock and video encoder.
> 
> Yes, that's correct. Without supplying the external clock, there
> would be no genlocking. Without (eventually - we used component
> workflow wherever possible and as long as possible) external encoding
> there would be no actual PAL/NTSC encoded signal.

To make things more complicated, there is a mode where Agnus switches
hsync and vsync to inputs. That way you could atleast in theory
generate video modes with different resolutions like a 40Hz mode with
over 300 visible lines. I don't know if anyone has tried this. It seems
like this was ment to be used for genlocking but then someone found out
that it works better to just PLL the system clock.



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