Real-Time Workshop

DOS Target Basics

The discussion that follows describes using Real-Time Workshop in a DOS environment. Advances in computing technology have resulted in DOS-based systems being replaced by a variety of alternative platforms. Particularly, the xPC Target and the Real-Time Windows Target provide significantly greater capabilities than does the DOS target. We recommend use of these targets for real-time development on PC platforms. For detailed information, see the Real-Time Windows Documentation and the xPC documentation.

Note    The DOS target is provided only as an unsupported example. Also, note that the DOS target requires the Watcom C compiler. See A Note on the Watcom Compiler.

This chapter includes a discussion of:

• DOS-based Real-Time Workshop applications
• Supported compilers and development tools
• Device driver blocks -- adding them to your model and configuring them for use with your hardware
• Building the program

The DOS target creates an executable for DOS, using Watcom for DOS. The executable runs on a computer running the DOS operating system. It will not run under the Microsoft Windows DOS command prompt. This executable installs interrupt service routines and effectively takes over the computer, which allows the generated code to run in real time. If you want to run the generated code in real time under Microsoft Windows, you should use the Real-Time Windows Target. See the Real-Time Windows Target User's Guide for more information about this product.

Targeting DOS for Real-Time Applications

DOS Device Drivers Library