Subject: Re: 'direct' VRAM access, how ?
To: Robert Black <r.black@ic.ac.uk>
From: Peter Berg <root@Kyra.FutureGroove.de>
List: port-arm32
Date: 02/28/1997 00:06:40
> On Feb 27, 4:18pm, Peter Berg wrote:
> > Subject: 'direct' VRAM access, how ?
> > Hi folks,
> >
> > because my last query didn't reached the mailinglist for some unknown
> reasons,
> > here it is again:
> >
> > How can I map the video ram from the console device into my userspace for
> > 'direct' vram access ?
> >
> > I tried :
> >
> > fd = open("/dev/console", O_RDWR | O_NONBLOCK, (mode_t)0644);
> ^^^^^^^^^^^^
> should be /dev/vidcvideo0
Yep, this works now, Thanks !
But how can I determine the address of the upper left edge of the screen ?
The address I get from the mmap call is somewhere on the screen.
Are there any ioctl's to set a specified video mode e.g. x800y600c36k ?
If there would be a description somewhere I'd need not to query on this list
;))
Ciao, Peter
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