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Dungeon Master for PC-9801

Cracks Downloads Dungeon Master PC-9801 / PC-9821
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Editions

Dungeon Master for PC-9801 (Japan, 3.5 inch floppy disks)
Games
Dungeon Master for PC-9801 (Japan, 3.5 inch floppy disks)
3D Box Dungeon Master Editions Manuals PC-9801 / PC-9821
Dungeon Master for PC-9801 (Japan, 5.25 inch floppy disks VX/RX/RA)
Games
Dungeon Master for PC-9801 (Japan, 5.25 inch floppy disks VX/RX/RA)
3D Box Dungeon Master Editions Manuals PC-9801 / PC-9821
Dungeon Master for PC-9801 (Japan, 5.25 inch floppy disks VX/RX/RA/RS)
Games
Dungeon Master for PC-9801 (Japan, 5.25 inch floppy disks VX/RX/RA/RS)
3D Box Dungeon Master Editions PC-9801 / PC-9821

Screenshots

Version 2.0 Japanese, 8-bit graphics
Dungeon Master (Japan, PC-9801) - 8-bit FTL Logo
Dungeon Master (Japan, PC-9801)
8-bit FTL Logo
Dungeon Master (Japan, PC-9801) - 8-bit Title
Dungeon Master (Japan, PC-9801)
8-bit Title
Dungeon Master (Japan, PC-9801) - 8-bit Entrance
Dungeon Master (Japan, PC-9801)
8-bit Entrance
Dungeon Master (Japan, PC-9801) - 8-bit Credits
Dungeon Master (Japan, PC-9801)
8-bit Credits
Dungeon Master (Japan, PC-9801) - 8-bit Dungeon View
Dungeon Master (Japan, PC-9801)
8-bit Dungeon View
Dungeon Master (Japan, PC-9801) - 8-bit Inventory
Dungeon Master (Japan, PC-9801)
8-bit Inventory
Version 2.0 Japanese, 16-bit graphics
Dungeon Master (Japan, PC-9801) - 16-bit FTL Logo
Dungeon Master (Japan, PC-9801)
16-bit FTL Logo
Dungeon Master (Japan, PC-9801) - 16-bit Title
Dungeon Master (Japan, PC-9801)
16-bit Title
Dungeon Master (Japan, PC-9801) - 16-bit Entrance
Dungeon Master (Japan, PC-9801)
16-bit Entrance
Dungeon Master (Japan, PC-9801) - 16-bit Credits
Dungeon Master (Japan, PC-9801)
16-bit Credits
Dungeon Master (Japan, PC-9801) - 16-bit Dungeon View
Dungeon Master (Japan, PC-9801)
16-bit Dungeon View
Dungeon Master (Japan, PC-9801) - 16-bit Inventory
Dungeon Master (Japan, PC-9801)
16-bit Inventory

Information

Release date: February 9, 1990
Retail price: ¥9800
Known versions:

  • Version 2.0 Japanese (2 variants)

Downloads

Dungeon Master (PC-9801)

This archive contains PC-9801 disk images in HDM format:

Dungeon Master for PC-9801 2.0a (Japanese) Original (Not working).hdm
This is an image of the original floppy disk (except the copy protection sector) and cannot be started because of the copy protection.
Dungeon Master for PC-9801 2.0a (Japanese) Cracked.hdm
This version is cracked (with the crack details below).
Dungeon Master for PC-9801 2.0b (Japanese) Original.hdm
This is an image of the original floppy disk. This version is newer, contains some bug fixes and is not copy protected.

Crack

To apply the crack, follow these steps (this applies to version 2.0a, version 2.0b is not copy protected and does not need cracking):

  1. Open the file NECIO.EXE in a hexadecimal editor.
  2. Go to offset 0x1CF1 and replace 74 03 EB 62 by EB 64 EB 62. This will remove the protection check when you start a new game.
  3. Open the file FIRES.EXE in a hexadecimal editor.
  4. Go to offset 0x2636D and replace 26 FF 5F 58 by 90 90 90 90. Although not mandatory for the crack to work, this will disable attempts to read the copy protection sector from the floppy disk, which would fail anyway when using a copied disk.
  5. Go to offset 0x263A3 and replace 4F 74 01 by 4F 74 00.
  6. Go to offset 0x263BD and replace 4F 74 03 by 4F 74 00. This will cause copy protection sector checks to always succeed.