Re: REU driving VIC chip?

From: David Wood (
Date: 2008-12-12 04:53:43

On Thu, 11 Dec 2008, Craig Taylor wrote:

> I'm just wondering how predictable / reliable / reproducible driving the VIC
> chip from the REU would be? I can think of all sorts of fun, interesting
> tricks to play by disabling the VIC (mono-color) and then having the REU
> dump various values into the background register.

The vic only changes background color every cpu cycle.  i.e. best horizontal
resolution would be 8 pixels.

Ive done tests using the supercpu, which can do a c64 write every 1mhz cycle
with ease. ;)


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