jsnospam@cimmeri.com <js@cimmeri.com> wrote:
On Feb 27, 7:31 am, demp...@actrix.gen.nz (David Empson) wrote:
The horizontal line is the same width in SHR and other video modes,
implying the same time (about 40 microseconds) for the active portion of
the row, so it must have a higher frequency dot clock in order to fit
320 or 640 pixels in the same space as 280 or 560 for other modes.
David, have you actually verified that they are the same width with
your eyeballs and a ruler? Just curious if this is an established
fact now.
Yes, I just checked.
If anything, SHR mode is a fraction narrower (about 2 mm) than text
mode, and the entire screen offset to the left about 2 mm. These are
probably artifacts of my old greenscreen composite monitor, depending on
how many pixels are illuminated.