18 Dec
2008
18 Dec
'08
11:16 p.m.
From: "Philipp Hachtmann" <hachti at hachti.de>
Sent: Thursday, December 18, 2008 11:00 PM
I have had the VGA and the incandescent lamps running side-by-side, so I
can see how "wrong" the VGA stuff looks :-). There is stuff flashing on
and off in the VGA display that should just be "on dimly", all over the
place. It gives a misleading impression that things are happening on
a human timescale that just aren't. Of course, for single stepping,
the VGA display is OK, since the display is "static" until you press
a switch (or a key on the keyboard, in the case of my VGA display).
The VGA display is *way* better than no lights, though :-).
Vince
Since the
shift registers move quite fast, it completely
swamps the lamps' ability to change brightness. Unlike the VGA display,
I haven't observed any "beat frequency" artifacts.
I know the VGA
problem... Happens only if I restrict the update to the
blanking period...
If I don't restrict, I get a slight stranger image, but the real
blinkenlight effect :-)