From: Marko Mäkelä (
Date: 1998-09-18 08:04:51

On Thu, 17 Sep 1998, Geoff Oltmans wrote:

> Huh... maybe Commodore had plans to remove the RAM refresh stuff from
> the VIC-II and just use the ASIC. That's very interesting.

Why would they do that?  The RAM refresh is extremely simple, and removing
it from the videochip would just have costed money.  On each raster line,
the video chip reads 5 addresses from $3FFF-$3F00.  The refresh counter
counts downwards, and it is a function of $D012 (i.e. it resets at raster
lines $100 and $00).


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