VIC-II and luma levels

Hello,

I know there is a major difference in the PAL version of the VIC-II 
between the 6569R1 and all later versions. The R1 is only able to do 5 
luma levels (1-4-6-4-1 number of colors per level) for the 16 colors 
while the later versions are able to do 9 luma levels 
(1-2-2-2-2-2-2-2-1). Some demos look quite odd on the R1.

I know there were timing changes between revisions in the NTSC versions 
of the VIC-II (6567), but were there also changes with the luma levels? 
And how many levels does a 6567 have?

It's easy enough to check with a little BASIC program and some time to 
sort the colors into the right sequence. Then turn down the color.

  Gerrit


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