Christopher G. Mason wrote:
As for the artifacts, its likely from the upscaling of the video to fit
theLCDpanel. The IIgs technically outputs 240p (progressive) video,
although the internal processor may handle it as standard 480i
(interlaced) video and add in scanline artifacts as well (the first
field is the IIgs video, the second field is blank). At a minimum you
can turn off the stretching of 4:3 video to 16:9 (if its a widescreen
display). Otherwise you could try using a VERY expensive external video
processor like the DVDO series from Anchor Bay for better results and
tweakability. They will allow you to use any DVI/HDMI equipped monitor
with your IIgs as well.
I have no experience with the Anchor Bay unit, but I am very happy with the
results from a Highway Model 100 RGB (Scart) --> XGA converter. Using Roger
Johnstone's cable (I did have to switch the signal used for sync from the
default) it presents a quite reasonable picture with no motion artifacts.
Better still, it's fantastic as a scan doubler for my Amiga 2000! The 640x480
interlaced NTSC mode, unusable on a CRT monitor due to major flickering, just
looks beautiful. Stable as a rock.
The unit was about $220 US when I purchased it, but is well worth it in my
opinion.
Steve