I have recently downloaded a ROM of Sega 32X Doom and I managed to extract the assets and dump them into a WAD file readable by Slade3 on Windows. There is a utility dating from 2009 that can perform this task admirably.
Dumping 32X Doom assets to a PC format wad file using the utility.
PS G:\Code\wad32x_100> .\wad32x.exe ------------------------------ DOOM 32X WAD CONVERTER v1.00 Written by Damian Grove Jan 7 2010 ------------------------------ USAGE: wad32x.exe [command] [in file] [out file] example 1: wad32x.exe -export doom32x.bin doompc.wad example 2: wad32x.exe -import doompc.wad doom32x.bin Press any key to continue . . . PS G:\Code\wad32x_100> .\wad32x.exe -export '.\Doom 32X (E) [!].bin' doompc.wad ------------------------------ DOOM 32X WAD CONVERTER v1.00 Written by Damian Grove Jan 7 2010 ------------------------------ 0x0001 PUNGA0 0x0003 PUNGB0 0x0005 PUNGC0 0x0007 PUNGD0 0x0009 PISGA0 0x000B PISGB0 0x000D PISGC0 0x000F PISGD0 0x0011 PISGE0 0x0013 PISFA0 0x0015 SHTGA0 0x0017 SHTGB0 0x0019 SHTGC0 0x001B SHTGD0 0x001D SHTFA0 0x001F SHTFB0 0x0021 MISGA0 0x0023 MISGB0 0x0025 MISFA0 0x0027 MISFB0 0x0029 MISFC0 0x002B MISFD0 0x002D PLSGA0 0x002F PLSGB0 0x0031 PLSFA0 0x0033 PLSFB0 0x0035 SAWGA0 0x0037 SAWGB0 0x0039 SAWGC0 0x003B SAWGD0 0x003D CHGGA0 0x003F CHGGB0 0x0041 CHGFA0 0x0043 CHGFB0 0x0045 BFGGA0 0x0047 BFGGB0 0x0049 BFGGC0 0x004B BFGFA0 0x004D BFGFB0 0x004F PLSSA0 0x0051 PLSSB0 |
Then I could open the wad in Slade3 and view the Sega 32X Doom assets easily. This is very easy.
Here is a list of all offsets found in the Sega 32X ROM.
0x000D76 -- Code for main menu (after exiting "Options") 0x000E3C -- Code for transitioning from "Skill Level" to game 0x000EA0 -- Code for "Skill Level" selection 0x000E66 -- Code for "Level" selection 0x000EF8 -- Code for "Run", "Fire", and "Use" selections 0x000FB0 -- Code for "Controls" selection 0x001010 -- Code for "Options" selection 0x001110 -- Code for "Music" selection 0x001158 -- Code for "Sfx" selection Skull menu X/Y offsets -- 0x000C7E 0x0367EC -- Pointer to WAD file (WAD file at 0x0BB000) 0x037EC8 -- Pointer to "SKY1" string (string at 0x037DCC) 0x037ECC -- Pointer to "SKY2" string (string at 0x037DD4) 0x037ED0 -- Pointer to "SKY3" string (string at 0x037DDC) These need debugging to fully understand: 0x037E4C -- Changing this to 1 makes episode 1 display SKY3 (why?) 0x037E56 -- Changing this to 1 makes episode 2 display SKY3 (why?) Big digit intervals on status bar -- 0x002102 DEMO1 starts at 0x04EA04 Maximum level number selection (15) is at 0x000E74 Minimum level number selection (1) is at 0x000E8E 0x00212A -- something with intermission screen... more research later IDKFA cheat is the word at 0x00193A and 0x001940 IDDQD cheat is the word at 0x001958 and 0x00195E 0x002488 -- Code to play a song "3EBC 00## 4EB9 00882488" -- instructions used to play music ## 0x0043C8 -- Z80 sound driver 0x005C16 -- List of voice pointers (each voice is 0x27 bytes) 0x005E96 -- E1M1 bass 0x006EA2 -- Song pointers (starting at song #0; E1M1 is #1) data: xx (yyyy) -- xx tells how many yyyy's there are yyyy is a pointer to an FM track 0x00776F -- E1M1 main melody 0x007C9F -- E1M1 bass 0x01083D -- E1M1 beat data: 00-5F -- Note data: 60-7F -- Controllers controller: 6B xx -- Play track xx data: 80-BF -- Note sustain time (lower = quicker) data: C0-FF -- Note interval (lower = quicker) Music playlist -- 0x000C52 Intermission song -- 0x00124C Title song -- 0x0013BA Credits song -- 0x00144E 0X04E900 -- rndtable[] from "d_main.c" Sound pointer table starts at 0x0B11D8 (all in big-endian) Sound header for explosion starts at 0x069520 long --- length of sound in bytes long --- ??? long --- ??? Music pointers, or something??? -- somewhere in 0x11040 Another set of sounds -- starts at 0x01142C (all in little-endian) long --- location of sound file short -- start of sound at location (useful to skip header maybe??) short -- size of the sound in bytes long --- 0x00000000 (doesn't seem to be used for anything) first sound is menu open second sound is menu close Sound file names pointers -- 0x068E30 These point to the filenames of each sound. This table doesn't appear to be used by the game. Pointers are big-endian, and the format goes like this: [ptr] [???] [???] [???] [???] [???] [???] That's 7 long words. This table is in "sounds.c" in the Jag source |
Download this utility here: https://securitronlinux.com/arma3/wad32x_100.zip.
This works very well to extract all Doom 32X assets.
This may also be used to repack a 32X Doom ROM with modified files. It could be possible to remake all the maps and make a 32X Doom game with different maps. But making maps that work reliably in 32X Doom would be challenging. A map like Okupluk would not work. But someone has ported Doom2 MAP01 to 32X Doom and it works.
