function. See "How To Use" and
"Known Problems" below.
Implemented by Peter H. Wendt, Edited by Tomáš Slavotínek.
How To Use
The upper part contains cells that can be changed. They are currently filled
with a set of values, which are taken from one of my own monitors (an IDEK
MF-5015A) and which can be used as an example.
Go to the bottom of this table and press [Calculate] to see how the empty
cells in the lower part are filled with the appropriate values. Change some
values / settings and see how the results change after clicking on
Then overwrite the cell values in the upper part with the values from your
own monitor. Go to the [Calculate] button again and see the calculated values
for your settings.
Use [Reset Cells] to clear the result cells and restore the default
The values calculated had many digits after the decimal point. Sometimes
calculating accuracy is not very helpful. I have used a rounding routine to
calculate the values to Integer numbers. This should do for most cases.
At the bottom end of the calculator you will find a field with a ModeLine,
which you can copy and paste if you like...
In most cases you will be able to at least get a stable picture, which might
be a bit off-centered or a bit too wide / too high. Most monitors allow to
"re-adjust" on these settings, some allow the screen width / height / position
to be stored for several individual modes. In case you cannot adjust your
monitor for proper position / size you should try carefully changing the
values in the ModeLine at places 3,4 and 7,8 (HSync Start / End and VSync Start
/ End). Do not change the values for the Pixelclock or the HTotal / VTotal and
Entering negative values for B, C, E or P, Q ,S will end up in an illegal
ModeLine, which is not accepted from XF86. Modes which require the HSync or
VSync to start within the active display area (D and R) will not work!
In addition you must set the HSync / VSync polarities and Interlace Mode
(radio buttons) according to the monitor documents!