It may be little strange when we discuss how TV for Apple II is designed
to work 40 column only, but it will not work 80 oclumn which it can be
unreadable and fuzzy. Monochrome monitor is only the option.
I did my experiment by connecting Apple II's video port to my Sony TV
with 32 inch and 36 inch. I set switch from any channel to video mode. I
turned on Apple II. Text and graphic in 40 column are very clear readable.
I notice that it has very little strange reading white horizontial line.
Look at this example below.
Green
XXXYYY
Violet
YYYXXX
White
YXXXXY
Left "XXX" is for green and right "YYY" is for black. Left "YYY" is for
black and right "XXX" is for violet. Green and violet are correct. Left
"Y" and Right "Y" are for black, but they are supposed to be white. "XXXX"
is for white. When you read each text character which they have horizontial
line with left and right missing dots. It looks funny, but it is clear
readable.
I tried to use 80 column. It is unbelievable that 80 column is READABLE
on Sony 32 inch and 36 inch. I did try text and graphic (double high
resolution and color text in double high resolution) using 80 column. They
are READABLE.
I believe that Sony TV has increased the frequency which it is higher
enough for 80 column unlike old television. I am not sure if it is real
NTSC or emulated NTSC. If there is a possibility that video should be
converted to Y-B-R like HDTV, it would be clearest readable.
Please comment what you think my experiment.