## Using Your DDK

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### Virtual CD-ROM Device Driver

Driver Description:

The Virtual CD-ROM Device Driver enables audio support for CD-ROM applications running in DOS sessions of OS/2 2.1. It emulates the presence of MSCDEX by providing the services that CD-ROM applications require for installation. It also translates the DOS-style IOCtls into requests that the physical CD-ROM device driver can understand.

Compilers/Assemblers Required:

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

Build Instructions:

1.Set the environment variables so the correct tools are picked up during the build.

    e.g., SET PATH=<drive>:\DDK\TOOLS;%PATH%

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\BASE\SRC\VDEV\VCDROM.

3.Invoke NMAKE on the resident makefile.

Files Created by Successful Build:

         Directory:  \DDK\BASE\SRC\VDEV\VCDROM

         o  VCDROM.SYS