^A clocking issue. Reminds me of http://www.os2museum.com/wp/the-isa-osc-mystery/
Personally, I often do my experiments with LCD/TFT VGA "monitors" that come with an additional Composite input.
That way, I make sure that they can handle 15KHz and/or other weird timings.
Likewise, LCD/TFT TVs with VGA are interesting.
They are more flexible in most situations.
A real CRT VGA monitor is best, of course.
It can handle various resolutions "natively".
"Natively" because it technically also has a native resolution, based on dot-pitch, screen mask and so on.
By comparison, a monochrome CRT monitor comes closer to not having a native resolution due to the absence of a screen mask.
"Time, it seems, doesn't flow. For some it's fast, for some it's slow.
In what to one race is no time at all, another race can rise and fall..." - The Minstrel
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