Filename:  jbrosdbg.ips
Console:   Virtual Boy
Game:      Jack Bros. (U)
Comments:  Unlocks Debug Cheats Which are Normally Inaccessable


This is an IPS patch file, you will need an IPS patcher program to apply the
patch to your Jack Bros. (U) ROM. This has been made and tested on the USA
ROM with CRC32 801F5A10.


When the patched ROM loads, you will notice nothing unusual. However, there
are certain cheats which have been disabled by the programmers. This patch
re-enables them for you to explore!


Using the Left D-Pad, enter the following button combination on the Title
Screen to access "Super Players Mode."
Right, Right, Right, Right, Right, Right, Left, Left, Left, Right, Right,
Right, Right, Right, Right
(This cheat works on the unpatched games)

Using the Left D-Pad, enter the following button combination on the Title
Screen to access the Sound Test menu.
Up, Up, Up, Down, Down, Down, Down
(This cheat will only work on the unpatched Japanese game, or the patched
USA game -- Note that on the USA game, the music\sfx names are scrambled)

Using the Left D-Pad, enter the following button combination on the Title
Screen to access the Floor Select menu.
Right, Right, Right, Right, Right, Right, Right, Left, Right, Right, Right,
Right, Right, Right, Right
(This cheat only works on the patched games)

Using the Left D-Pad, enter the following button combination on the Title
Screen to access the "Muteki Select" menu.
Up, Right, Down, Left, Up, Right, Down, Left, Up, Right, Down, Left
(This cheat only works on the patched games -- Note that "muteki" means
invincible, and "ataru" means vulnerable)

Using the Left D-Pad, enter the following button combination on the Pause
Menu to enable Full Map View.
Up, Left, Down, Right
(This cheat works on the unpatched games)

Using the Left D-Pad, enter the following button combination on the Pause
Menu to disable Full Map View.
Up, Right, Down, Left
(This cheat works on the unpatched games)



On a final note, this patch consists of only two bytes changed! Address 0x0000
is a variable which the game checks to ensure it's allowed to allow the cheats.
If the byte at this address is 0x00, the game will not allow the debug cheats,
otherwise, it will! Address 0x1218 is a function which watches the user enter
the Sound Test cheat. If the game is not in Japanese mode, it disallows the
use of the Sound Test cheat! So the second byte changed ensures the language
is set to English.
To change your ROM to Japanese mode, change the byte at 0x0004 to 0x00!