Re: Disabling memory refresh in UltiMax mode Re: 6510 handling of $00 and $01 registers

From: Segher Boessenkool <>
Date: Mon, 12 Dec 2011 23:27:33 +0100
Message-Id: <>
>>> When testing a C64, I use the type check program mentioned above  
>>> plus a RAM test and the 'Edge of Disgrace' demo. The latter has a  
>>> few 'plasma' effects and on those you notice that they were  
>>> written for a 9-luma VIC. On the 6569R1 they look less smooth.
>> You could just switch the monitor to greyscale :-P
> How would that help? You would still get 5 levels of gray instead  
> of 9.

As I said, I thought the whole point of this exercise was to
detect the 6569R1.  Gerrit is testing something else though.


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Received on 2011-12-12 23:00:08

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