SETUP.MOD is a container based file format which holds multiple “modules”. These modules are pre-game “SETUP” routines which have been bundled externally from the main game's executable. The SETUP.MOD module is located inside GAMEWAD.OBJ. It's stored right after the loading screen+loading cd bitmap data. Based on Tomb Raider 1's “TOMB.map” it is known that there is a file called “SETUP.C”. The file in question is not present in the PlayStation TR5 codebase judging by the symbol data. It's safe to assume the SETUP.mod module contains the same/similar code.

SETUP.MOD has it's own header which consists of various pointers as follows:

enum modules
{
    UNKNOWN_0,
    UNKNOWN_1,
    UNKNOWN_2,
    UNKNOWN_3,
    UNKNOWN_4,
    UNKNOWN_5,
    UNKNOWN_6,
    MODULE_LEVEL_LOAD,//Contains the code which loads a level file into the game and setups up various game structs/calls initialisation routines.
    NUM_MODULES
};
 
struct SETUP
{
    long pModule[NUM_MODULES];
};