Rene Herman wrote:
James Richard Tyrer wrote:
[ Haven't followed along and am missing context ]
TV interlaced (NTSC 640x480 or PAL <what ever it is>)
TV progressive (NTSC 640x480 or PAL <what ever it is>)
The DVD standard is 720x480 (720x576 for PAL). Getting that format
unscaled out onto a connected TV is important I guess.
Actually, you can display 640x480 (square pixels) on NTSC. But you are
correct that an actual digital TV signal that has the pixel clock a
multiple of the color sub-carrier is 720x480 (pixels are NOT square).
So, PAL with square pixels would be 768x576.
50 or 60 Hz also selects if TV is NTSC or PAL.
Possible, but note that many DVD players on the European market play
NTSC DVDs fine and turn them into PAL-60, meaning many TVs available
here nowadays also do PAL-60. At least all flat-panel TVs I've seen upto
now do.
That would only matter if using the TV output. Perhaps we will also
need a switch to select the TV output format. If it is the component
video output the NTSC should display OK on a TV that supports PAL-60.
Yes, they of course also do 50, but PAL-60 is not an unimportant format
then. Again, playing NTSC-DVD format video on the connected TV is why
you'd like to be able to just do PAL-60 if your TV supports it.
IAC, this is only to select the default boot video mode. Well actually,
PAL-60 would probably be better for that than 50 Hz PAL.
--
JRT
_______________________________________________
Open-graphics mailing list
[email protected]
http://lists.duskglow.com/mailman/listinfo/open-graphics
List service provided by Duskglow Consulting, LLC (www.duskglow.com)
