Re: [Linux-fbdev-devel] Supporting various depth

[James S. <jsi...@tr...>]

> > In vga: 
> > char[n] is at mem[2n]
> > attribute[n] is at mem[2n+1]
> > 
> > In nv3, linear aperture:
> > char[n] is at mem[8n]
> > attribute[n] is at mem[8n+1]
> 
> On Matrox it is almost same, only constant differs. There are defined 
> FB_AUX_TEXT_MGA_STEP8 and FB_AUX_TEXT_MGA_STEP16. Millennium1 and
> G-series use STEP16, Mystique and MillenniumII use STEP8 ... nv3 driver
> should use STEP8 - maybe after creating FB_AUX_TEXT_STEP8 and
> obsoleting *_MGA_* values.

Yipes. What is in that extra space? 8 bytes for one cahracter? I rather
keep the text modes and the fbdev modes seperate. I like to think of
/dev/vcsa as for text modes where /dev/fb is the device for graphics
modes. So I like to see a api developed for text modes.