Re: Commodore 8296GD

From: Rainer <*rainer_at_glassix.de*> Date: Sat, 13 Oct 2012 15:00:06 +0200 Message-ID: <op.wl4bqgh5peuhbq@rainer-asus.fritz.box> · rainer_at_glassix.de

Am Sat, 13 Oct 2012 12:54:52 +0200 schrieb Michał Pleban  
<lists@michau.name>:

> Hello!
>
> Today I checked the video memory orientation. It is really very simple.
> The bitmap starts at $A000 in expansion ram, and continues to $DFFF.
>
> The bitmap is organized linearly, so the first 64 bytes form the first
> line, then the second line etc. This is different from, for example, C64
> bitmap where the bitmap is formed into 8-byte "characters". Here the
> data bytes are just placed line by line.
>
> I have yet to figure out the correct way to switch on the display mode -
> apparently the CRTC initialization sequence I found earlier is not
> enough. I will keep looking in the ROM.
>
> Regards,
> Michau.
>
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