The Motorola Coldfire port was done with the M5235BCC kit from Freescale. It features a Freescale MCF5235 processors with 2Mb Flash and 16Mb SDRAM. The development toolchain used is the GNU C compiler 3.4.6 with the Insight debugger  and the P&E micro debuggers . The files for this port can be found in demo/MCF5235.
Since version 1.1.2 of FreeModbus the there exists also a complete CodeWarrior port together with a complete port of FreeRTOS for the Coldfire family. The files for this port can be found in demo/MCF5235CW. A demo version of the excellent CodeWarrior compiler is available at .
: Needs the Insight debugger from http://sourceware.org/insight and the m68k-bdm patches for development available at http://sourceforge.net/projects/bdm/.
: A free 64k limited version ICDCF is available at P&E Microcomputer Systems.
: A free 128k limited version of CodeWarrior is available at Freescale’s CodeWarrior for ColdFire Architectures site.