Dungeon Master for X68000

Editions

Games

Dungeon Master for X68000 (Japan)

3D Box Dungeon Master Editions Manuals X68000

Screenshots

Version 3.0 Japanese, 31kHz video mode

Information

Retail price: ¥9800
Known versions:

• Version 3.0 Japanese

Downloads

Dungeon Master (Japan, X68000)

These versions consist of X68000 disk images in HDM format.
Dungeon Master for X68000 3.0 (Japanese) Original (Not working).hdm

• This is an image of the original floppy disk (except the copy protection sectors) and cannot be started because of the copy protection.

Dungeon Master for X68000 3.0 (Japanese) Cracked.hdm

• This version is cracked (with the crack details below).

Dungeon Master for X68000 3.0 (Japanese) Save Disk.hdm

• This is a blank save disk.

See also: How to play X68000 games under Windows? (Dungeon Master and Chaos Strikes Back)

Crack

To apply the crack, follow these steps:

1. Open the file FTLCODE in a hexadecimal editor.
2. Go to offset 254BAh and replace ‘61 1C 1E 00 61 18 B0 07 67 06’ by ‘0C 2E 93 91 00 09 67 00 00 6A’. This will remove the protection check when you start a new game. Note that the checksum (sum of byte values) of the replacement code is the same as the checksum of the original code, so that the modified file is loaded successfully by DM.X with no error message.
3. Go to offset 25919h and replace ‘56 00 00 2F 03 70’ by ‘75 00 00 2F 03 70’. Although not mandatory for the crack to work (the above change is enough), this will disable attempts to read the copy protection sector from the floppy disk, which would fail anyway when using a copied disk. However this will change the code checksum so you must also make the change below to disable the checksum verification.
4. Open the file DM.X in a hexadecimal editor. Go to offset B8Eh and replace ‘67 1C 2F 3C’ by ‘60 1C 2F 3C’ (ignore invalid code checksum value)

Another option is to use the crack program of Chaos Strikes Back for X68000 which also works with Dungeon Master for X68000 (both use exactly the same copy protection scheme): You can copy CK.R into the disk image, and modify AUTOEXEC.BAT to run CK.R before running the game. The CK.R crack works by intercepting read attempts of the copy protection sector on the floppy disk and returning the expected data to the game.