## Using Your DDK

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### DBCS VGA/SVGA Virtual Video Driver

Driver Description:

Double-Byte Character Set (DBCS) VGA/SVGA virtual device drivers are used as VGA or SVGA virtual display devices for DOS applications running in DOS sessions. These International Language Support device drivers are required when it is necessary for multiple DOS sessions to share one or more video devices. A separate driver is provided for each of the commonly used video devices.

Compilers/Assemblers Required:

         Microsoft MASM 5.1  (supplied with the DDK)
         Microsoft CL386     (supplied with the DDK)

Build Instructions:

1.Run the SETDBCS.CMD command file in the <drive>:\DDK\TOOLS directory, passing <drive> and DDK as parameters. This will set the path and environment variables.

    e.g., SETDBCS <drive>:\DDK

Where <drive> represents your DDK installed drive and DDK represents the DDK installed directory. On the CD-ROM, the TOOLS directory path is DDK\ TOOLS.

2.Change the directory to DDK\DBCS\SRC\VDEV\VVGAJ.

3.Invoke NMAKE on the resident makefile.

Files Created by Successful Build:

         Directory:  \DDK\DBCS\SRC\VDEV\VVGAJ

         o  VVGA.SYS
         o  VSVGA.SYS