Calculator for video timings v. 1.0

Select the screen mode timings: Custom screen mode VGA 640x480 60Hz VGA 640x480 72Hz VESA 640x480 75Hz VESA 640x480 85Hz SVGA 800x600 56Hz VESA 800x600 60Hz VESA 800x600 72Hz VESA 800x600 75Hz VESA 800x600 85Hz VESA 1024x768 60Hz VESA 1024x768 70Hz VESA 1024x768 75Hz VESA 1024x768 85Hz VESA 1152x864 75 Hz VESA 1152x864 85 Hz VESA 1152x882 70Hz VESA 1152x882 85Hz VESA 1280x1024 60Hz VESA 1280x1024 75Hz VESA 1280x1024 85Hz VESA 1600x1200 60Hz VESA 1600x1200 70Hz VESA 1600x1200 75Hz VESA 1600x1200 80Hz VESA 1600x1200 85Hz VGA to TV converter 640x480 50 Hz (PAL) VGA to TV converter 640x480 60 Hz (NTSC) VGA to TV converter 800x600 50 Hz (PAL)

Graphics card parameters to fill and modify

General parameters Pixel clock frequency MHz
Horizontal timing parameters Resolution pixels Front porch pixels Sync pulse pixels NEGATIVE POSITIVE polarity Back porch pixels	Vertical timing parameters Resolution lines Front porch lines Sync pulse lines NEGATIVE POSITIVE polarity Back porch lines

Move picture:

Note 1: The horizontal timing parameters must be normally to be multiple of 8 because this is the resolution which stadard VGA cards operate in those timings and same applies to most of SVGA cards also.

Note 2: Screen mode settings do not set the sync signal polarity because the needed sync signal polarity depends on the monitor and screen mode used. If you do not know what polarity is needed try first to check both negative. Sync signal polarity settings do not affect the timing calculations. Sync signal polarities affect only to the generated configuration files.

Note 3: Moving picture the picture to the extreme positions may result unstable picture on the monitor.

Press when you want to get the results.

Calculated results

Numerical results

Horizontal sync frequency is kHz and vertical sync frequency is Hz.

Horizontal sync pulse length is microseconds and vertical sync pulse length is microseconds.

Horizontal total is pixels and vertical total lines.

If you want to test other values then fill in new values and press calculate again.

Configuration files

NOTE: The following configuration files are calculated from the data above. There no guaantee that the calculated configuration files work on your system. Use the configuration files at your own risk. In some unfortunate cases it is possible that you damage your monitor or mess up your graphics card driver settings.

Xfree86 modeline:

Matrox Windows driver custom monitor settings:

Windows95 monitor.inf file modeline:
Note: Windows monitor .INF file contains only the screen refresh rate and sync polarity information. It does not contain screen position information.