On 12 May 2015 at 13:46, aurelio remonda <aurelioremo...@gmail.com> wrote: > Im using lm3s6965evb stellaris board, trying to make it "work as an M4", i > would like to separate them, adding an dsp feature (i.e ARM_FEATURE_DSP) > could work? the problem is if this feature is added it has to be set on all > the cpus that use dsp instructions.
You need to create a new Cortex-M4 CPU model, which can then set the correct feature switches for the instructions and functionality that that CPU has. If there's something that only exists on a subset of CPUs but which we're currently providing everywhere then we need to add a new feature bit and set it on the CPUs which have it but not the ones which don't. -- PMM
