In order for the MMU to function, the TR bit at $FF90 must be cleared and the MMU must be enabled. However, before doing this, the address data for each memory segment must be loaded into the designated set of task registers. For example, to select a standard 64K map in the top range of the Color Computer 3’s 512K RAM, with the TR bit set to 0, the following values must be preloaded into the MMU’s registers:

In order for the MMU to function, the TR bit at $FF90 must be cleared and the MMU must be enabled. However, before doing this, the address data for each memory segment must be loaded into the designated set of task registers. For example, to select a standard 64K map in the top range of the Color Computer 3’s 512K RAM, with the TR bit set to 0, the following values must be preloaded into the MMU’s registers: