1. (a) The control program shall ensure the integrity of all critical program components that operate the EGS.
2. (b) The integrity checks must at a minimum occur during the execution of said components and the first time the files are loaded for use (even if only partially loaded), where applicable.
3. (c) RAM and PSD (program storage device) space that is not critical to machine security (e.g., video or sound ROM) are not required to be validated, although the test laboratory recommends a method be in place for the files to be tested for corruption.
4. (d) If any of the video or sound files contain payout amounts or other information needed by the player, the files or program storage must have a secure method of verification.

Codification Notes: “RAM” means random access memory.