Re: 6569 luminances

From: silverdr_at_wfmh.org.pl
Date: Sun, 13 May 2012 20:13:56 +0200
Message-Id: <1A62018F-4DB0-4CFE-935F-917B81E4E561@wfmh.org.pl>
On 2012-05-13, at 19:36, Gerrit Heitsch wrote:
> I kind of like the 250407 boards. The last board revision with the discrete PLL using the MC4044P and 74LS629. Doesn't look blurry to me

I recall (out of memory) that there was a big difference between the discrete and 8701 revisions in sharpness (or rather blurriness ;-) especially when connected via separate chroma / luma. But also on the composite output the difference was visible. Luma on the latter was tack sharp, and similar to the composite of the latter, on the discrete. Out of my head...

> and if you're lucky you get the 6569R3 in ceramic.

That's exactly why I plugged-in the 6569R3 some years ago - I was happy to have the c00l jewel: ceramic VIC version - but didn't test it properly back then.

> On the other hand, the 250466 is also nice, the first board with the 41464 DRAMs and usually the 6569R5 and 6581R4AR.

Yup - those were IMHO the best boards. With lots of unused space though. Mine (the one I refer to) is 250425. I keep it because it is a) the original first I bought and b) it is customised, with practically everything socketed, etc.

-- 
SD!
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Received on 2012-05-13 19:00:09

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