The IBM Interactive Code Analysis Tool (ICAT) Debugger is used for debugging OS/2 device drivers, kernel code, IFSs, and applications that are running on an OS/2 remote machine. The debugger helps you detect and diagnose errors in code written in C, C++, and MASM languages at the source level. The ICAT for OS/2 debugger is a source-level debugger which uses OS/2 Warp 3.0 or higher to assist in detecting and diagnosing errors in an OS/2 Warp 3.0 or higher system. It provides a graphical user interface and debugs PM and non-PM (single or multithreaded) applications as well as device drivers and other system-level binaries. It has been designed to debug remotely an OS/2 system using the Kernel Debugger (KDB). KDB runs on a victim OS/2 machine and replies to debug service requests that are sent from the debugger which is running on a host OS/2 Warp 3.0 or higher machine. The supported communication mode between machines is serial. Supported debug file formats include HLL, which is IBM VisualAge C++ (VACPP), and CodeView (CV).