news:1109835206.740814.125030@o13g2000cwo.googlegroups.com...

DVI (and similar digital interfaces, or even analog types, for that
matter) really doesn't have a "max. resolution" (pixel format)
per se.  The limiting factor is pretty much always the pixel rate,
and as long as you can put together a valid timing for a given format
which does not exceed the rate limit of the interface in question,
the interface will be happen.  For instance, a format of, say,
200 pixels horizontally by 10,000 vertically at 60 Hz refresh may
be a silly thing to do, but since the pixel rate would probably come
in well under 150 MHz it wouldn't pose much of a problem for
most interfaces.

With respect to DVI specifically, the maximum pixel rate
permissible (in the single-pixel-per-clock mode) is 165 MHz;
this is sufficient to cover the VESA standard timing for
1600 x 1200 at 60 Hz (162.000 MHz pixel clock), even at
CRT-like blanking times.  Reducing the blanking will increase
the active pixel count supportable quite a bit higher, of course.
However, whether or not a given implementation can actually
support the specified max. rate is not guaranteed; cable and
connector quality issues may limit the max. rate that can be
reliably used to something less than the spec. maximum.

Bob M.