Re: 6569 luminances

From: Marko Mäkelä <>
Date: Mon, 14 May 2012 00:08:26 +0300
Message-ID: <20120513210826.GB6340@x220>
On Sun, May 13, 2012 at 04:52:06PM +0200, wrote:

That image was derived by Philip Timmermann from my measurements of the 
video signal with an oscilloscope:

I used the same mainboard and exchanged video chips on it. I probably 
used something like POKE53280,x:POKE53281,x to change the colour.

>It seems that the R3 displays colours noticeably brighter than R4 for 
>example (I remain at PAL only) although it seems to be better (more 
>uniformly) distributed in the higher range in R3, R4 seems to be doing 
>better in the lower (darker) range. Also seems to me, only by looking 
>at the picture in question, that R5 is a sort of compromise between R3 
>and R4. Now, has anyone on the list a chance to test this in practice 
>and say (very subjectively of course) which "looks best in real life 

Yes, you should have a chance, given that I gave you (or Ruud) my 
collection of VIC-II chips a couple of years ago.


       Message was sent through the cbm-hackers mailing list
Received on 2012-05-13 22:00:09

Archive generated by hypermail 2.2.0.