## Input/Output Device Driver Reference

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### APM IOCtl Test Architecture

The DDTT provides a common front-parser for test case scripts and also tests several devices and APIs. The following DDTT APM IOCtl-specific stub code and grammar files are required:

DDTAPM.DLL

APM.GRA

The VisualAge C++ source code DDTAPM.DLL is available on the IBM Developer Connection Device Driver Kit for OS/2. The following required, common components of DDTT implement DDTT's programmable parser and common test functions such as SET, LOOP, and PAUSE:

DDTT.EXE

DDTT.DLL

GLOBAL.DLL

GLOBAL.GRA