Re: 6569 luminances

From: silverdr_at_wfmh.org.pl
Date: Sun, 13 May 2012 19:04:51 +0200
Message-Id: <36C2AF42-F770-4CFA-94A3-AC4D7AC84DA6@wfmh.org.pl>
On 2012-05-13, at 18:49, Gerrit Heitsch wrote:

>> a little ago we had a discussion on the VIC luminances levels and this picture by Markko was referred
>> 
>> http://www.zimmers.net/anonftp/pub/cbm/documents/chipdata/656x-luminances.gif
[...]
> If you want to only see the luminance levels, here's a picture:
> 
> http://www.zimmers.net/anonftp/pub/cbm/documents/chipdata/656x-luminances.gif

No - it is the same picture I referred to above ;-)

There is olso the document

http://www.zimmers.net/anonftp/pub/cbm/documents/chipdata/656x-luminances.txt

which basically confirms my observations from the picture in terms of levels and their distributions across voltage range. But this doesn't really says much about the way it looks in colour in "real life applications"

> Too bad it doesn't include anything about the 8565R2. Especially since it is possible to use it instead of a 6569 with only minimal modifications (none to the board) on the older boards.

Frankly, I didn't like the 8565. Mostly due to the sharp "spikes" it exhibits in some raster effects (visible as white dots on the screen)

-- 
SD!
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Received on 2012-05-13 18:00:05

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