You can use SYS/BIOS with the LM4F232H5QD, but you must treat the processor as an M3 processor. All this really means is that the floating point functions of the M4 should be used by only one task, because SYS/BIOS won't save/restore the floating point state. This will be fixed in a future release of SYS/BIOS, but I'm not aware that any schedule has been announced.
