Definitely true, but that's a delicate change. For instance, this
UPM
patch has the same logics for the 83xx & 85xx platforms, but the registers are different. Unifying this code should result in lots of ugly ifdefs.
which registers are different?
Well, not quite the register structures, but more the way they are accessed. For instance, the BRx registers are accessed differently in the 83xx (via the lbus array) comparing to the 85xx (via lbc). In the ioports code, for instance, the code has the same logics for both platforms, but the registers are accessed via different structures, and even have different names (dir1 vs. cpdir1 for instance). I think this kind of change would also require changes in the register definition files, if we want the unified code to be clear.
David.