Re: IIGS composite video->VCR

[mjmahon@aol.com (Michael J. Mahon)]

Mitchell Spector replied:

>DoNOT@feed.the.trolls (SlickRBCD) wrote:
>
<snip>
>
>>but why wouldn't the text screen work in color?
>
>    It's a feature, which unfortunately cannot be changed using the
>Control Panel settings.

Since the bandwidth of the NTSC composite chroma signal is
less than 2MHz, you couldn't even get 40 characters across the
screen.  That's why the color burst is turned off in text mode.

If the burst is on, as with mixed text/graphics screens, the
high dot bandwidth of the luminance signal aliases into myriad
of fuzzy colors on a composite display, producing a colorful but
very hard-to-read display.  It would be impossible to produce
more than about 24 characters of any _particular_ color without
a much more clever video generator (with two-pixel wide dots
and anti-aliasing).

-michael

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