Re: VIC stuff

From: Marko Mäkelä (
Date: 2003-09-03 21:46:50

On Wed, Sep 03, 2003 at 07:58:17PM +0200, Laze Ristoski wrote:
> CCS and VICE emulated this, so Andreas Boose and Per
> Hakan Sundell know this issue. :)

Andreas Boose was a major contributor to Christian Bauer's article.
He made many measurements and experiments in 1994, and there was a lively
discussion on this in one of the German Z-Netz newsgroups around 1994 or

> Long story short: In char mode VIC makes C-accesses to
> read characters. The memory address which is G-accessed is
> determined by base of charset + 8*char code + RC.
> How is the memory address determined with bitmap?

If you fill the 16kB VIC bank with an easily recognizeable pattern, it
shouldn't be too hard to figure it out.  It's better to use banks 1 or 3,
because the character generator ROM is not mapped in those banks.


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