Newest Hacks

MegaMan Wily Wars SRAM hack Mini Ver Mega Man 4: Free of Charge Bram Stoker's Dracula SRAM Splatterhouse 3 SRAM

Newest Translations

Wai Wai World 2: SOS!! Paseri Jou Fire Emblem: Ankoku Ryu to Hikari no Tsurugi Fire Emblem: Shin Monshou no Nazo - Hikari to Kage no Eiyuu Adventure Island

Newest Utilities

Zombies Ate My Neighbors Level Editior NES Big Nametable Editor Tile Molester Patchinator

Newest Documents


Newest Reviews

Mega Man 4: Free of Charge Choujin Sentai Jetman Revenge of Shinobi - Better Jumping Thwaite

Featured Hack Images

Tecmo Super Bowl: 1987-88 Super Mario Bros. - Alcatraz Mario vs. Bowser and Mighty No. 9 Joe & Mac Improvement

Featured Translation Images

Ys IV: Mask of the Sun Torneko no Daibouken: Fushigi no Dungeon Kaeru no Tame ni Kane wa Naru Perman Part 2: Himitsu Kessha Madoodan wo Taose!

Recent Updates

  • Games
    Super C was affected by this as well!
  • Games
    For whatever reason, the title screen was replaced with the one from the Indonesian translation of the game. This also happened with Snow Bros.!
  • Games
    For whatever reason, the title screen was replaced with the one from the Indonesian translation of the game. This also happened with Adventure Island (GB)!
  • Community
    Removing link from unused account

Phantasy Star III Disassembly

Source Code


This is a disassembly of the UE version of Phantasy Star III. It can be re-assembled using the Macro Assembler AS which was modified to make writing both M68K and Z80 code easier on the Mega Drive/Genesis.

Many pointers and offsets were labelled in order to edit the ASM code without breaking any functionality.

The sound driver written in Z80 assembly language can also be modified without any problems.


User Review Information

Outstanding Tool

Reviewed By: fedorajoe on 06 Aug 2019

This was my first time working with Assembly, so there was a learning curve for me. Even so, the various areas of the document are well-labeled, and explanatory text outlines areas of major interest, such as the character stats and initial equipment. It’s really simple to edit, and it compiles in seconds.

I can’t say enough about the error reporting. If there are any issues during compiling, a simple text file is generated that explains precisely where the errors are located. As someone used to hacking ROMs in a hex editor, this is a godsend.

This is an outstanding tool for anyone who wants to play around with Phantasy Star III. It’s simple enough that you can generate basic hacks quickly (say, renaming things or increasing the difficulty level), but also powerful enough to be capable of doing, well… pretty much anything you can think of.

(Many thanks as well to the author for being so helpful and patient with my many questions!)

Very much looking forward to experimenting with lory1990’s other Assembly docs!

Version 1.0 Recommended - Yes

User Reviews
Outstanding Toolfedorajoe06 Aug 20191.0Yes