Real-Time Windows Target

Incompatibility with Win32 API Calls

The Real-Time Windows Target kernel intercepts the interrupt from the system clock. It then reprograms the system clock to operate at a higher frequency for running your real-time application. At the original clock frequency, it sends an interrupt to the Windows operating system to allow Windows applications or any software using the Win32 API to run.

As a result, software that uses the Win32 API may not be executed as a component of your real-time application. Any software you use to write I/O drivers must not have any calls to the Win32 API.

Source Code for DOS Target Drivers

Nonsupported C Functions