I have looked all over the Mot site, and really havent seen much of what I can use... I found an application note that is for the DSP56F85X, also an FAQ for doing development in CW in pure assembly. What I have in mind is to safely update firmware on a 56F803 or 5 so that if the serial link is disturbed during the update, that the system isnt dead in the water. What I proposed to myself is to place a bootstap routine into serial memory (not big enough to hold the whole application), then when commanded to do so, the application would take the bootstrap from the serial memory, and write it to the boot memory of the DSP. The DSP would be restarted, and would then allow a polled serial transfer of the actual application. After a 100% successfull transfer, the boot memory would then be altered to erase the bootstrap, and program in the boot section for the application. The bootstrap would be written in assembly, and would not use any interrupts to insure that the bootstrap is 100% free of application dependancy. Anyone seen such a thing? The target hardware is updated often and cant be shipped back for JTAG firmware updates. Comments or assistance would be much appreciated.