2500 SX/25  (250-1610)             VGA1024              Faxback Doc. # 1134            

The vga1024.exe utility is a specialized utility designed to work with you
VGA-compatible video circuitry. 

USING VGA1024.EXE

The vga1024.exe utility enables you to select on of the standards supported
by the video circuitry. You can choose a standard either from a menu or
directly from the MS-DOS command prompt.

If you have a hard disk installed, you can copy the vga1024.exe utility to 
the hard disk. We recommend making a backup copy of the VGA utilities.

To access vga1024.exe from diskette:

1. Start up your computer.

2. At the MS-DOS prompt, insert the MS-DOS Disk 2 into Drive A.

3. Type a: and press [ENTER]. Then, type vga1024.exe menu. Then, press
   [ENTER]. To exit, choose EXIT to DOS and press [ENTER].

You can bypass the vga1024.exe menu by including the desired video 
option(s) when accessing vga1024.exe. At the MS-DOS prompt or in a batch 
file, type the vga1024 command in the form:  
    a:vga1024 (options)

where options is one of the following video options:

   VGA--Selects VGA mode (the default configuration).

   CGA--Selects CGA mode (emulates the video capabilities of the IBM
   Color/Graphics Adapter).

   MDA--Emulates the Hercules Graphics Card with no graphics memory 
   allocated (equivalent to IBM's text-only Monochrome Display Adapter).

   HERCO--Emulates the Hercules Graphics Card with one page of graphics 
   memory allocated (equivalent to using the Hercules Graphics Card is HALF
   mode).

   HERC1--Emulates the Hercules Graphics Card with two pages of graphics 
   memory allocated (equivalent to the Hercules Graphics Card in FULL 
   mode).

   COLOR--Sets the video circuitry to color mapping as needed, supporting 
   video modes that require color mapping.

   MONO--Sets the video circuitry to monochrome mapping as needed, 
   supporting video modes that use monochrome mapping (such as monochrome 
   text mode).

   640--Sets 256-color, 640 x 480 graphics mode; use only with application
   programs designed to take advantage of Super VGA graphics.

   800--Sets 16-color, 800 x 600 graphics mode; use only with application
   programs designed to take advantage of Super VGA graphics. This mode 
   requires a multiple-frequency monitor.

   1024--Sets 16-color, 1024 x 768 graphics mode; use only with application
   programs designed to take advantage of Super VGA graphics. This mode 
   requires a multiple-frequency monitor.

   200--Sets the video circuitry to display 200 scan lines.

   350--Sets the video circuitry to display 350 scan lines.

   400--Sets the video circuitry to display 400 scan lines.

   13225--Sets 132-column, 25-line color text mode; use only with 
   application programs designed to take advantage to Super VGA text
   capabilities.

   13243--Sets 132-column, 43-line color text mode; use only with 
   application programs designed to take advantage to Super VGA text
   capabilities.

   LOCK--Locks in the current video configuration as the new default
   configuration. This command can be used with another parameter to lock 
   in that particular mode. For example, the command vga1024 cga lock will
   enable the video circuitry to remain configured as a color/graphics 
   adapter even after you press [CTRL] + [ALT] + [DEL]. Any specific video 
   mode command, such as vga1024 cga, unlocks the video circuitry unless 
   you lock in your particular command.

USING A MOUSE WITH VGA1024

If your mouse driver is a program such as mouse.com or if you include a 
DEVICE command in your config.sys file to install your mouse driver, you 
might need to restart the computer after choosing a video mode:

1. At the vga1024.exe menu, select your desired option. (Set CGA, Hercules, 
   or MDA.)

2. Choose the REBOOT SYSTEM IN CURRENT MODE option. The system restarts.
   Reload any drivers or TSR utilities you want to run.

3. To return to VGA mode, run the vga1024.exe utility and select a VGA 
   option.

Refer to your mouse installation guide for more instructions on installing 
and using the mouse.

NOTES:

* Using the REBOOT SYSTEM IN CURRENT MODE option is equivalent to 
  activating the vga1024.exe utility's Lock Current Mode option and then
  pressing [CTRL] + [ALT] + [DEL]. Subsequent restarts cause the VGA 
  adapter to come up in the selected mode (Hercules, MDA, or CGA). Using 
  the vga1024.exe utility to select any other mode causes subsequent 
  restarts to come up in the default VGA mode.

* The REBOOT SYSTEM IN CURRENT MODE option can be accessed from the MS-DOS
  command line or through an MS-DOS batch file by using the REBOOT 
  parameter.  For example, to switch from VGA to Hercules mode when the 
  mouse driver has been loaded, use the following command: 

  vga1024 herc1 reboot


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