Main Menu
Main Page
Recent changes
Random page


Major Glitches
Trainer escape glitch
Old man glitch
Celebi Egg glitch
SRAM glitch
Buffer overflow techniques
Pomeg glitch data corruption (Glitzer Popping)
Pokémon cloning
Select glitches (Japan)
Time Capsule exploit
Arbitrary code execution

Other Glitch Categories
Glitches by generation
Japan-only/language specific glitches
Natural glitches
Non-core series glitches
Non-Pokémon glitches
Recurring glitches

Pokémon GameShark codes
Pokémon Game Genie codes
Disassembly projects
The Big HEX List
GB programming
Debugging features
Error traps
Non-glitch exploits
Pokémon glitch terminology
Unused content and prerelease information

Useful Tools
8F Helper
GBz80 to Items
Old man trick name generator
PATH (Prama's Advanced Tweaking Heaven)
Save file editors
Special stat/Pokémon converter
Trainer escape Trainer Pokémon finder

Legendary Star Blob 2 (Hakuda)
Pokémon Speedruns wiki
PRAMA Initiative
Become an affiliate!

Site Source Code

Search Wiki


Search Forums


Author Topic: Serious emulation problem with Monster Race (GB)?  (Read 3868 times)

0 Members and 1 Guest are viewing this topic.


  • French living dexer
  • Distinguished Member
  • *
  • Offline Offline
  • Gender: Male
  • Head admin of the PRAMA Initiative
    • View Profile
    • PRAMA Initiative - Main french Pokémon glitch website
Re: Serious emulation problem with Monster Race (GB)?
« Reply #15 on: September 04, 2017, 04:55:40 pm »
Hey, I have one of those GBA Movie Player! Good times playing NES on my DS Fat.

Admin of the PRAMA Initiative, the main french Pokémon glitch website
“Anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge.'” - Isaac Asimov


  • Coder, reverser, beta collector [BetaArchive staff]
  • Staff
  • *****
  • Offline Offline
  • Gender: Male
  • cBRH - Doing nothing since 2k7
    • View Profile
Re: Serious emulation problem with Monster Race (GB)?
« Reply #16 on: September 07, 2017, 09:43:33 am »
I finally took a look at the "bad dump", turns out it's not really a "bad dump", someone modified the ROM.

Entry point jumps to 0:00e0, which is just nops in the good dump, but this space was used to add the following code:

ld a,0
ld [$6000],a
ld a,$30
ld [$6000],a
jp $0150

This code makes no sense, the header says it uses MBC1, where $6000 is a 1-bit wide register that flips between two different banking modes. Maybe this is for flashcart compatibility?

In addition, a ld a,1 got patched to ld a,0 at 00:024C, and again at 01:488E.

Finally, the header checksum got patched.
C H E C K E D . B U I L D S . A R E . A W E S O M E N E S S

BetaArchiveSoftHistory #galaxy,#softhistory

Also known as The Distractor.

Shane, please stop telling children that there's a Mew outside under the delivery trucks. - Management

Pokémon: arbitrary code execution 1996-2016


  • Buyer beware: House comes with 3 free skeletons in a closet of your choice.
  • GCLF Member
  • *
  • Offline Offline
  • Gender: Male
  • This box intentionally left blank. ...wait...
    • View Profile
    • (null)
Re: Serious emulation problem with Monster Race (GB)?
« Reply #17 on: September 08, 2017, 08:05:07 am »
Well then... we have our answer.
Ask me about betrayal.
Ask me about depression.
Ask me about death.
Ask me about destruction.
Ask me about hardship.
I've been through s**t.
If you need to talk to someone, my PM inbox is always open.