2500 SX/20  (250-4077)            VGA1024.EXE           Faxback Doc. # 1252

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 WITH VGA1024.EXE:

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