LeRoy Cressy on Tue, 16 Jan 2001 11:47:20 -0500


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Re: [PLUG] setting up a 19" monitor with XF86Setup 

There are some neat tools for generating mode lines:

One is one I grabbed of of the net which is attached:
	timing-calc.html

This is a java script and to use it you need some info that comes from
the monitor manufacturer.  If you have a viewsonic see the attached
	viewsonic-timings.txt 

I used this and the timing calc to get super resolution of 1600x1200 on
my 19" monitor.

Also look at the XF86Config file under monitor and screen sections.

basic wrote:
> 
> dear people:
> 
>      i have setup Xwindows.  i used XF86Setup. i do not see how to change
>      the active display area from 300x225mm to 360x270mm for my 19" monitor.
>      under microsoft windows, my monitor is 19".
>      my screen has a black picture frame border.
>      when i use xvidetune to widen or make the area larger, the screen
>      becomes unstable.
>      i have looked at the XFree86 video timings howto and the man
>      pages for   XF86Config.
>      thank you,
>      sandy basickes
> 
> 
> ______________________________________________________________________
> Philadelphia Linux Users Group       -      http://www.phillylinux.org
> Announcements-http://lists.phillylinux.org/mail/listinfo/plug-announce
> General Discussion  -  http://lists.phillylinux.org/mail/listinfo/plug

-- 
Rev. LeRoy D. Cressy   mailto:ldc@netaxs.com         /\_/\
                       http://www.netaxs.com/~ldc   ( o.o )
                       Phone:  215-535-4037          > ^ <

Jesus saith unto him, I am the way, the truth, and the life: 
no man cometh unto the Father, but by me. (John 14:6)
Title: Video timing calculator

Calculator for video timings v. 0.9

Copyright Tomi Engdahl 1998,1999

NOTE1: You need at least Netscape 2.0 or IE3 browser with JavaScipt/Jscript turned to to use this form. This calculator version has been tested using Netscape 4.

NOTE2: This calculator application is in development stage and there is no guarantee that the results you get from this from are correct. Use this at your own risk. If you find errors in this page please e-mail me with a good description what is wrong.

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 milliseconds.

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.

Tomi Engdahl <Tomi.Engdahl@iki.fi>

Back to index 
TIMING SPECIFICATION REFERENCE CHART
============================
CLOCK FREQ.             MHz     25.1745 31.5    31.5    25.1745 31.5    31.5

HORIZONTAL                                                              

Data Pixel              (dots)  640     640     640     640     640     640
Frequency               (kHz)   31.468  37.86   37.861  31.468  37.86   37.861
Period          (us)    31.778  26.413  26.413  31.778  26.413  26.413
Display Time            (us)    25.423  20.317  20.317  25.423  20.317  20.317
Blank Time              (us)    6.356   6.095   6.095   6.356   6.095   6.095
Front Porch             (us)    0.636   0.762   1.016   0.636   0.762   1.016
Sync Width              (us)    3.813   1.27    2.032   3.813   1.27    2.032
Back Porch              (us)    1.907   4.063   3.048   1.907   4.063   3.048

VERTICAL                                                                

Data Line               (lines) 350     350     350     400     400     400
Frequency               (Hz)    70      84.165  85.08   70      84.165  85.08
Period          (ms)    14.268  11.886  11.754  14.268  11.886  11.754
Display Time            (ms)    11.122  9.245   9.244   12.711  10.565  10.565
Blank Time              (ms)    3.146   2.641   2.509   1.557   1.321   1.189
Front Porch             (ms)    1.176   0.924   0.845   0.381   0.238   0.026
Sync Width              (ms)    0.064   0.079   0.079   0.064   0.079   0.079
Back Porch              (ms)    1.907   1.638   1.585   1.112   1.004   1.083
Sync Pol. H/V                   pos/neg pos/neg pos/neg neg/pos neg/pos neg/pos
============================
CLOCK FREQ.             MHz     25.1745 30.24   31.5    31.5    36

HORIZONTAL                                                      
                                (MAC)                   
Data Pixel              (dots)  640     640     640     640     640
Frequency               (kHz)   31.468  35      37.86   37.5    43.269
Period          (us)    31.778  28.57   26.413  26.667  23.111
Display Time            (us)    25.423  21.163  20.317  20.317  17.778
Blank Time              (us)    6.356   7.407   6.095   6.35    5.333
Front Porch             (us)    0.636   2.083   0.762   0.508   1.556
Sync Width              (us)    3.813   2.083   1.27    2.032   1.556
Back Porch              (us)    1.907   3.241   4.063   3.81    2.222

VERTICAL                                                        

Data Line               (lines) 480     480     480     480     480
Frequency               (Hz)    60      66.67   72.809  75      85.008
Period          (ms)    16.684  14.999  13.735  13.333  11.764
Display Time            (ms)    15.254  13.714  12.678  12.8    11.093
Blank Time              (ms)    1.43    1.286   1.057   0.534   0.67
Front Porch             (ms)    0.318   0.086   0.238   0.027   0.023
Sync Width              (ms)    0.064   0.086   0.079   0.08    0.069
Back Porch              (ms)    1.049   1.114   0.74    0.427   0.578
Sync Pol. H/V                   neg/neg SOG/ H/V        neg/neg neg/neg neg/neg
============================
CLOCK FREQ.             MHz     36      40      50      49.5    56.25

HORIZONTAL                                                      

Data Pixel              (dots)  800     800     800     800     800
Frequency               (kHz)   35.156  37.879  48.077  46.875  53.674
Period          (us)    28.444  26.4    20.8    21.333  18.631
Display Time            (us)    22.222  20      16      16.162  14.222
Blank Time              (us)    6.222   6.4     4.8     5.171   4.409
Front Porch             (us)    0.667   1       1.12    0.323   0.569
Sync Width              (us)    2       3.2     2.4     1.616   1.138
Back Porch              (us)    3.556   2.2     1.28    3.232   2.702

VERTICAL                                                        

Data Line               (lines) 600     600     600     600     600
Frequency               (Hz)    56.25   60.316  72.188  75      85.061
Period          (ms)    17.778  16.579  13.853  13.333  11.756
Display Time            (ms)    17.067  15.84   12.48   12.8    11.179
Blank Time              (ms)    0.711   0.739   1.373   0.533   0.578
Front Porch             (ms)    0.028   0.026   0.77    0.021   0.019
Sync Width              (ms)    0.057   0.106   0.125   0.064   0.056
Back Porch              (ms)    0.626   0.607   0.478   0.448   0.503
Sync Pol. H/V                   pos/pos pos/pos pos/pos pos/pos pos/pos
=============================
CLOCK FREQ.             MHz     57.283  44.902  65      75      75      80      78.75
80      80      94.5

HORIZONTAL
                                (8514/A)
(MAC)           
Data Pixel              (dots)  832     1024    1024    1024    1024    1024    1024
1024    1024    1024
Frequency               (kHz)   49.725  65.52   48.363  56.476  57.87   59.524  60.02
60.24   61.35   68.677
Period          (us)    20.111  28.15   20.677  17.707  17.28   16.8    16.66   16.6
16.299  14.561
Display Time            (us)    14.524  22.8    15.754  13.653  13.653  12.8    13.003
12.8    12.8    10.836
Blank Time              (us)    5.587   5.35    4.923   4.053   3.627   4       0.3657
3.8     3.5     3.725
Front Porch             (us)    0.559   1.12    0.369   0.32    0.32    0.775   0.203
0.4     0.8     0.508
Sync Width              (us)    1.117   2.4     2.092   1.813   1.92    1.6     1.219
1.2     1.1     1.016
Back Porch              (us)    3.91    1.28    2.462   1.92    1.387   1.625   2.235
2.2     1.6     2.201

VERTICAL

Data Line               (lines) 624     768     768     768     768     768     768
768     768     768
Frequency               (Hz)    74.55   89.95   60.004  70.07   71.799  73.486  75.03
74.93   76.023  84.997
Period          (ms)    13.414  11.5    16.666  14.272  13.928  13.608  13.328  13.346
13.154  11.765
Display Time            (ms)    12.549  10.81   15.88   13.599  13.271  12.9    12.795
12.749  12.518  11.183
Blank Time              (ms)    0.865   0.69    0.786   0.673   0.657   0.705   0.533
0.598   0.635   0.582
Front Porch             (ms)    0.02    0.014   0.062   0.053   0.536   0.151   0.017
0.05    0.13    0.015
Sync Width              (ms)    0.06    0.113   0.124   0.106   0.104   0.084   0.05
0.05    0.065   0.044
Back Porch              (ms)    0.784   0.577   0.6     0.513   0.501   0.47    0.466
0.498   0.44    0.524
Sync Pol. H/V                   neg/neg pos/pos neg/neg neg/neg neg/neg neg/neg pos/pos
pos/pos pos/pos pos/pos
=============================
CLOCK FREQ.             MHz     121.5   100     92.941  105.59

HORIZONTAL                                              
                                (MAC-II)        (SPARC) (SPARC)
Data Pixel              (dots)  1152    1152    1152    1152
Frequency               (kHz)   77.094  68.65   61.769  71.731
Period          (us)    12.971  14.65   16.182  13.941
Display Time            (us)    9.481   11.52   12.395  10.91
Blank Time              (us)    3.49    3.04    3.779   3.031
Front Porch             (us)    0.527   0.56    0.312   0.152
Sync Width              (us)    1.053   1.28    1.377   1.46
Back Porch              (us)    1.909   1.2     2.098   1.84

VERTICAL                                                

Data Line               (lines) 864     870     900     900
Frequency               (Hz)    84.999  75.06   65.99   76.023
Period          (ms)    11.765  13.323  15.16   16.498
Display Time            (ms)    11.207  12.667  14.56   15.585
Blank Time              (ms)    0.588   0.656   0.914   0.913
Front Porch             (ms)    0.013   0.044   0.35    0.35
Sync Width              (ms)    0.039   0.044   0.064   0.106
Back Porch              (ms)    0.506   0.568   0.5     0.457
Sync Pol. H/V                   pos/pos neg/neg pos/pos H/V mix, -/-
==============================
CLOCK FREQ.             MHz     108     135     157.5

HORIZONTAL                                      

Data Pixel              (dots)  1280    1280    1280
Frequency               (kHz)   63.981  79.98   91.146
Period          (us)    15.63   12.504  10.971
Display Time            (us)    11.852  9.481   8.127
Blank Time              (us)    3.778   3.022   2.844
Front Porch             (us)    0.444   0.119   0.305
Sync Width              (us)    1.037   1.067   1.016
Back Porch              (us)    2.296   1.837   1.524

VERTICAL                                        

Data Line               (lines) 1024    1024    1024
Frequency               (Hz)    60.02   75.03   85.024
Period          (ms)    16.661  13.329  11.761
Display Time            (ms)    16.006  12.804  11.235
Blank Time              (ms)    0.656   0.525   0.527
Front Porch             (ms)    0.016   0.013   0.011
Sync Width              (ms)    0.047   0.038   0.033
Back Porch              (ms)    0.594   0.475   0.483
Sync Pol. H/V                   pos/pos pos/pos pos/pos
==============================
CLOCK FREQ.             MHz     162     175.5   189     202.5   216     229.5

HORIZONTAL                                                              

Data Pixel              (dots)  1600    1600    1600    1600    1600    1600
Frequency               (kHz)   75      81.25   87.5    93.75   100     106.25
Period          (us)    13.333  12.308  11.429  10.667  10      9.412
Display Time            (us)    9.877   9.117   8.466   7.901   7.407   6.972
Blank Time              (us)    3.457   3.191   2.963   2.765   2.593   2.44
Front Porch             (us)    0.395   0.365   0.339   0.316   0.296   0.279
Sync Width              (us)    1.185   1.094   1.016   0.948   0.889   0.837
Back Porch              (us)    1.877   1.732   1.608   1.501   1.407   1.325

VERTICAL                                                                

Data Line               (lines) 1200    1200    1200    1200    1200    1200
Frequency               (Hz)    60      65      70      75      80      85
Period          (ms)    16.667  15.385  14.286  13.333  12.5    11.765
Display Time            (ms)    16      14.769  13.714  12.8    12      11.294
Blank Time              (ms)    0.667   0.615   0.571   0.533   0.5     0.471
Front Porch             (ms)    0.013   0.012   0.011   0.011   0.01    0.009
Sync Width              (ms)    0.04    0.037   0.034   0.032   0.03    0.028
Back Porch              (ms)    0.613   0.566   0.526   0.491   0.46    0.433
Sync Pol. H/V                   pos/pos pos/pos pos/pos pos/pos pos/pos pos/pos
==============================

If you need to contact me, please do not click on "Reply" to respond to this email.
Instead, please click on "Forward" and email me directly at gealogop@viewsonic.com. 

Thank you again for your inquiry.  If you need immediate assistance, please call us and
reference the above Case No.  We would be happy to serve you.  Thank you for Putting
ViewSonic on Top!

Sincerely,
Patrizia Gealogo
VS Technical Support Engineer
800-688-6688 (24-hr/7-days Customer Service = Option 1, Tech Support = Option 2)
gealogop@viewsonic.com