3.4 IPL

The IPL is a program that starts a game from disk. It is stored in the mask ROM built into the 64DD. This program runs when power to the N64 is turned on without a Pak being inserted. The main functions of this program are:

1. Checking expansion memory.
2. Prompting the user to insert a disk.
3. Displaying and setting the clock.
4. Starting a game after a disk is inserted.
5. Storing the ID of a loaded game in RDRAM.

For details on these tasks, please see "Chapter 4, 64DD Internal ROM."