Copyright: Copyright (C) EnTech Taiwan, 1995.


Display Control Panel
 ExpertColor DXP Control Panel

The DXP Control Panel allows you to select screen resolution, color depth, a vertical refresh rate, and the use of large and small fonts.  In addition, the Control Panel give you the option of enabling DCI services,  tuning the driver for performance and compatibility, as well as quick access to a VESA-compliant display power management services (DPMS) module.

Place the cursor over the field that you need help with. When the mouse pointer changes to a hand, click to display help for that field. Click again to make the pop-up text disappear.

Copyright © EnTech Taiwan, 1989-1995. All Rights Reserved.


Resolution

The DXP driver is capable of supporting screen resolutions of up to 1600 by 1200 pixels on compatible monitors. The maximum resolution available to you is determined by the video chipset, the number of colors you select, the amount of installed video memory, and your monitor's capabilities.

NOTE:	At a color depth of 4 bpp (16-colors), selecting a 640x480 resolution enables the native Windows VGA driver; acceleration options will be disabled using this driver.

See Monitor Timing for related information.


Colors

The DXP driver is capable of supporting color depths of 8, 16, 24 or 32 bits per pixel (bpp), for a palette of 256, 65535 or 16.7 million colors. At some resolutions and with some memory configurations, a color depth of 4 bpp (16 colors) and 15 bpp (32767 colors) may also be available. The maximum number of colors available to you is determined by the video chipset, the resolution you select and the amount of installed video memory.

NOTE:	At a resolution of 640x480, selecting a 4 bpp color depth (16-colors) enables the native Windows VGA driver; acceleration options will be disabled using this driver.

See Monitor Timing for related information.


Font Size

The DXP driver allows Windows to utilize large or small fonts.  Large (or 8514a/20 dot) fonts utilize screen resources of 120 dots per inch (dpi).  Small (or VGA/16 dot) fonts utilize screen resources of  96 dpi.  The use of 120 dpi rather than 96 dpi resources will increase the physical size of Windows system resources such as dialog boxes.


Undo Button

The Undo button cancels all changes which have been made and restores the original DXP configuration.


DXP Configuration

The DXP configuration fields register the parameters for which the DXP driver is currently configured.


Refresh Rate

The DXP driver supports a range of refresh rate settings (or vertical frequencies) for each display mode. The refresh rate you select determines the number of times per second that the display card sends an image to the monitor. Faster refresh rates are less likely to cause eye fatigue due to screen flicker, but subtract slightly from overall video performance.

The refresh rates appropriate for your system depend upon the capabilities of your monitor. Some experimentation may be necessary to find a subjectively optimal refresh rate. Note that the Control Panel allows you to adjust refresh rate settings in real-time for the currently active display mode.

See Monitor Timing for related information.


Monitor Timing

The table below will give you an indication of the relationship between monitor capabilities, video chipset, memory configuration, and supported DXP display modes and refresh rates.

Maximum Horizontal Frequency of Monitor	Maximum Refresh Rates and Color Depths for Different Monitors and Memory Configurations
	640x480	800x600	1024x768	1152x864	1280x1024	1600x1200
31.5 kHz	60 Hz	N/A	N/A	N/A	N/A	N/A
35.5 kHz	60 Hz	56 Hz	Interlaced	N/A	N/A	N/A
38 kHz	72 Hz	60 Hz	Interlaced	N/A	N/A	N/A
48 kHz	75 Hz	72 Hz	60 Hz	N/A	Interlaced	N/A
58 kHz	75 Hz	75 Hz	70/72 Hz	60 Hz	Interlaced	N/A
64 kHz	85 Hz	85 Hz	75 Hz	60 Hz	60 Hz	N/A
78 kHz	85 Hz	85 Hz	85 Hz	60 Hz	72 Hz	Interlaced
82 kHz	85 Hz	85 Hz	85 Hz	60 Hz	75 Hz	60 Hz
Memory	640x480	800x600	1024x768	1152x864	1280x1024	1600x1200
1 MB	24 bpp*	16 bpp	8 bpp	8 bpp	4 bpp**	N/A
2 MB	32 bpp	32 bpp	16 bpp	8 bpp	8 bpp	8 bpp
4 MB	32 bpp	32 bpp	32 bpp	8 bpp	16/24 bpp	16 bpp
* Trio64 supports 32bpp at 640x400. ** Trio32/64 only.
NOTE:	Depending on your display card's configuration, a 4 MB memory option and/or non-interlaced 1600x1200 display mode may not be available.


OK Button

Selecting the OK button will immediately terminate the session and any changes you have made will take effect.

Depending on the changes which have been made, you may be given the option to restart Windows immediately so that the changes you have made will take effect, to preview the selected display mode, or to return to Windows. If you elect to restart Windows, Windows will attempt to terminate all tasks and immediately restart using the new selections.  Otherwise, the changes you have made will take effect the next time Windows is started.

You also have the option of adding the selected refresh rate setting to your AUTOEXEC.BAT file so that your system will "remember" your preference each time it starts.


Cancel Button

Selecting the Cancel button will immediately terminate the session.  Any selections or changes will be disregarded, with the exception of real-time changes to the refresh rate.


Help Button

Selecting the Help button launches the Windows Help engine and this file.


DPMS Button

Selecting the DPMS button opens a Display Power Management dialog box where you have the option of enabling and configuring DPMS services.


Info Button

Selecting the Info button opens a dialog box listing device information for the current display driver and your display card's hardware configuration.


 Options Button

The Control Panel allows you to selectively enable or disable DCI provider services and DXP driver acceleration and compatibility options. Under most circumstances, you should leave all these options enabled to provide maximum graphics and video playback performance. However, in the event that you encounter a compatibility problem with a specific Windows application, you may be able to resolve it by disabling one or more of the advanced options. You also have the option of disabling DXP information notices and performance tips.


 Save As Button

The Control Panel allows you define and save up to five display configurations, so that you can quickly reconfigure your system to match your various working styles and application suites. Once you have selected a DXP configuration, click on the Save As button and then assign the configuration to one of the five Preset buttons.


 Preset Buttons

The Control Panel allows you define and save up to five display configurations, so that you can quickly reconfigure your system to match your various working styles and application suites. Once you have selected a DXP configuration, click on the Save As button and then assign the configuration to one of the five Preset buttons. The next time you need to reconfigure your display subsystem, simply click on the relevant Preset button and then click on the OK button.