The high byte of a series of Map16 data pointers in horizontal levels. The low bytes are at $00BA60, and the bank byte is either $7E or $7F. These are indexed by screen number; each byte in this table and the other corresponds to the start of a particular screen's Map16 data (or chunk of 0x1B0 bytes). These are used in various routines that read or write Map16 data to find where a particular tile is.