Hello.
There are 4 options in the 5bit shift MMC1-Control-Register ($8000-$9FFF) for the Mirroring-Setting
Why are there two options for onescreen-Mirroring? I know, one screen-mirroring means all (remaining three) nametables are a mirror of the first, but what does "lower bank" and "upper bank" mean for the mirroring?
There are 4 options in the 5bit shift MMC1-Control-Register ($8000-$9FFF) for the Mirroring-Setting
nesdevwiki wrote:
0: one-screen, lower bank; 1: one-screen, upper bank;
2: vertical; 3: horizontal
2: vertical; 3: horizontal
Why are there two options for onescreen-Mirroring? I know, one screen-mirroring means all (remaining three) nametables are a mirror of the first, but what does "lower bank" and "upper bank" mean for the mirroring?