Part 3: Split the BIOS data-and-tag area into bios_data and bios_smc_data. For now, these areas are simply splits of the old data.
Define Partial Flushes over the old code-modification detection metadata. This change breaks Golden Sun 2, because some of its code in RAM can execute as ARM or as Thumb. With only Full Flushes being available, the code could be recompiled immediately in the new mode, but not now.