EMS Vigilant-X, Руководство пользователя

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16/03/2006
Appendix 1 – Defining Custom Modes
Custom Mode information is stored in the Registry at:
•
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DGC123\Device0
In a REG_MULTI_SZ value named “Mode”. Each mode definition is on a single line (there
can be multiple mode definitions each on a new line). The mode definition should be typed in
the following format as a comma-separated string:
X, Y, Refresh, hfp, hsync, hbp, vfp, vsync, vbp, hpol, vpol, dotclock
For example:
1280,1024,50,24,240,144,3,3,1,0,0,90139
The following table explains what each value represents:
X Active display width in pixels
Y Active display height in lines
Refresh Refresh rate displayed in dialog. Also used for calculating dot-
clock if no dotclock value is provided
hfp Horizontal front porch in pixels (value must be divisible by 8)
hsync Horizontal sync width in pixels (value must be divisible by 8)
hbp Horizontal back porch in pixels (value must be divisible by 8)
vfp Vertical front porch in lines
vsync Vertical sync width in lines
vbp Vertical back porch in lines
hpol Horizontal sync polarity (0 = negative, 1 = positive)
vpol Vertical sync polarity (0 = negative, 1 = positive)
dotclock Pixel dot-clock in KHz (optional). Allows more accurate control of
the dot-clock
Note
If this registry value is amended the TWIN tab must be closed then re-opened to ensure
the new values are read from the Registry.