Re: cg14 vesa (modes) project on github

[Michael <macallan1888%gmail.com@localhost>]

Hello,

On Thu, 8 Jan 2026 05:12:14 +0300
Andrew Randrianasulu <randrianasulu%gmail.com@localhost> wrote:

> чт, 8 янв. 2026 г., 04:33 Michael <macallan1888%gmail.com@localhost>:
> 
> > Hello,
> >
> > On Wed, 7 Jan 2026 20:00:23 +0300
> > Andrew Randrianasulu <randrianasulu%gmail.com@localhost> wrote:
> >  
> > > found this project;
> > >
> > > https://github.com/mdehling/cg14-vesa-mod  
> >
> > "NetBSD 9.2 boots fine. The Xorg 'xf86-video-suncg14' driver implements
> > only 24-bit support. I have patched it to add 8-bit support and Xorg
> > works fine at 1920x1200x60 in 8-bit mode with a 4MB VSIMM. No hardware
> > acceleration for now!"
> >
> > ... I added 8bit support a while ago, mostly because people wanted to
> > run higher resolutions with 4MB VSIMMs. I also added ( still somewhat
> > wonky ) 16bit colour support, for the same reason.
> >
> > That being said, my drivers *should* run with whatever the firmware
> > hands them,  
> 
> 
> hm, I think I should test this patched qemu against latest netbsd/sparc
> install cd .... I am not sure NetBSD'S kernel driver can deal with
> _partial_ cg14 emulation, without real SX coprocessor backing it.

It should run as a dumb framebuffer if no sx attaches. X11 may crap
out, but the kernel driver should be fine.

> Is there simple way to turn off framebuffer accel for testing? Without
> recompiling ...

If there is no sx node in your device tree it should still work, if it
doesn't please tell me.

have fun
Michael