7keo / psx

Debug information from the Japanese PSX release of Diablo 1.

psx

The aim of this project is to facilitate an understanding of the inner workings of the Diablo 1 game engine, as based on the debug information of the Japanese release of Diablo 1 on Playstation 1 (SLPS-01416) and an early build of the European release of Diablo 1 on Playstation 1 (SLES-01156) with the code name Easy as Pie.

Directory structure

Note, the psx repository contains the debug information recovered from DIABPSX.SYM in two formats, firstly as original source files, and secondly as overlays.

The debug information split into original source files.

• funcs: function declarations
  • funcs/source/items.cpp contains function declarations related to item handling.
• globals: global variable declarations
  • globals/global_c.cpp contains the global variables of the overlay with ID $c

The debug information split into overlays.

• overlays: function and global variable declarations
  • overlays/overlay_c.h contains the functions and global variables of the overlay with ID $c

The debug info split into Python scripts for importing into IDA.

• ida: Python scripts for importing symbol information into IDA
  • ida/make_psx.py set names of symbols
  • ida/set_funcs.py set function signatures
  • ida/set_vars.py set types of global variables
  • ida/overlay_c/make_psx.py set names of symbols in overlay with ID $c

Overlays

• Overlay ID $b: FRONTEND.BIN
• Overlay ID $c: PREGAME.BIN
• Overlay ID $d: GAME.BIN
• Overlay ID $e: FMV.BIN

sym_dump

The information contained within this repository has been recovered by parsing the DIABPSX.SYM file contained on the Japanese release of Diablo 1 on Playstation 1 (SLPS-01416) using the sym_dump tool.