0xFF doesn't show up because the Monitor's length is set to 0xFF, which is 255. If you set the length to 0x100 it properly shows the first 256 entries.
As for the value at 0xFE, I don't know.
0xFF doesn't show up because the Monitor's length is set to 0xFF, which is 255. If you set the length to 0x100 it properly shows the first 256 entries.
As for the value at 0xFE, I don't know.