The evaluation copy of IAR Workbench that is included as part of the development system also features a powerful IDE that has many of the same features as the Keil µVision IDE. However, there is no support for the GNU C compiler which is not a major problem as the IAR compiler is an optimizing compiler, producing code 4 to 5 times more efficient than the GNU compiler. Also, the mIDAS link emulator is an RDI pod and can be used with IAR Workbench. The limitation on the evaluation copy is that only 32kB of code can be compiled and debugged. Again there is no limitation on the full version which is available directly from IAR. For users who wish to debug via the UART, there is also the option to use a ROM monitor. This may be useful in applications where there is not sufficient space on the PCB for the JTAG header.