The eCos framework provides simulators for several different processor architectures, including the Hitachi H8/300, MIPS, Matsushita AM3x, PowerPC, and SPARClite. A simulator can be useful when a development board is not available, or possibly too costly, and the hardware has not been developed. In these cases, the software can be developed for the target processor and run on a simulator target.
The simulators are run from the GNU debugger (GDB), either using the Insight GUI or from the GDB command line. To invoke the PowerPC-based GNU debugger you run the executable powerpc-eabi-gdb.exe.
The pre-built PowerPC GNU cross-development tools are also included on the CD-ROM in the file ppcgnutools.tar.bz2 under the gnu\ppctools ...