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Re: PCM5822 and video out....

From: Kelly Yancey <>
Date: Fri, 4 May 2001 10:33:30 -0700 (PDT)

On Thu, 3 May 2001, Bryan Hurley wrote:

>
> 640x400 at 60hz should be what you are outputting in DOS mode... I
> believe.. course it is character mode. Might be 640x480..
>

  Just FYI, VGA text mode (mode 0x03h) is actually 720x480. The character
cells are 9x16 pixels each, so the standard 80x25 character screen is
720x480 pixels in size. I'm sure a suitable text mode exists for 640x480
pixel resolution, but unfortunately I cannot think what it might be off
the top of my head. :(

  Kelly

> there were 640x200, 640x400, 640x480 modes.. could be you are in something
> other than 640x480...
>
> svgatextmode will let you lockin  the frequency and res to make it work
> better though..
>
> Bryan Hurley
>
> On Thu, 3 May 2001, Carlos Mora wrote:
>
> > Is there a way to have the video output come out in that mode? If so,
> > how do you set the PCM5822 to output in that mode? I am having the
> > same problem with my wearable and a MicroOpticalCorp vga HMD where I
> > can not see the console but blindly login and startx to get to where
> > I can see the display. I am guessing but probably SVGATextMode may
> > be the answer. I have not played with it yet.
> >
> > Carlos
> > >
> > >
> > > are you outputting at 640x480 at 60hz? at least at 60hz? try that setting,
> > > any color depth, and see if it clears up the display. I don't have a 5822
> > > so I can't test, but I have a vga->ntsc scan converter, which only takes
> > > 640x480 at 60hz, I tried running X-Windows as 320x240 and it was all
> > > squiggly...
> > >
> > > The display is an NTSC LCD right? that is running off of 12v from the car?
> > > should work..
> > >
> > >
> > > Bryan
> > >
> >
>
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