Many years ago, I abandoned a project using an early 9s12xa512 uP. Recently I have started a new project using the 9s12xe uP and porting a good chunk of the original code. But I noticed a lot of the code is accessing the internal RAM using global instructions with GPAGE=0. I no longer have the original uP reference manual for the 9s12xa, but I remember the code working back then. The only explanation would be if somehow I knew that the internal RAM is replicated/duplicated as multiple images between 00_0000 and 0F_FFFF caused by incomplete decoding of the upper address lines. Does anyone know if this is the case?