MAMEWorld Forums - Programming - Re: Where to find game disassemblies?

Having been around game consoles for many years, only venturing to arcades to play Tekken(!), my bug experience is limited, but I do have the following possibly undocumented glitches and Easter Eggs:

This section from the instruction book of Bank Panic for the Sega Master System always confused me:

Code:

ADVICE FROM PROFESSOR PLAYOR

* This is a game in which your "judgement",
  "reflexes" and "speed" are tested.

  Even an impatient player may at once be
  able to turn himself into a cool-headed
  gunman ...

* To begin with, your target is to clear 50
  rounds.

  If you are successful in accomplishing this
  lofty objective, then your gun play is
  considered to be that of a real first-class
  marksman.

The second sentence would also be a bit strange to be in a children's rated game as of 2010! Wonder if anyone went on a shooting rampage after being fed up to death of this game?

Back to the game... The only thing is, clearing 50 rounds on the Master System version of the game simply jumps you to Round 51; not only that, it is nearly impossible to shoot the robbers once you hit Round 15 as you get roughly 3 frames (1/20th of a second) to shoot them! The game itself has a kill/crash screen on round 253, causing the 'boy' character to spawn with 0 hats on his head. The instructions book is also heavily based on the arcade version of the game (even including a screenshot of it amongst the SMS ones!), of which is very different to the SMS version released three years later - however, the Japanese SG-1000 version is much more arcade faithful.

Speaking of Master System...
The infinite-lives-before-1000000 bug also exists in Sonic 1 for the Master System (and probably Game Gear and other ports and possibly even other Sonic games including 16-bit versions), not that you can get that many points in the game (use a score hack). Similar to the Defender bug.

An easter egg appears if you don't enter a name at the start - a series of random names which includes (Mr/Ms.) OPA OPA will appear instead (note that you can't select a space character in the interface - there are ten names at $919D in ROM). There is also a sound test hidden in the game (at $87F8), don't know how to access it as ASM isn't my forte.

Another strange bug is in Casino Games - enter a password of 0000000000 and you will receive $0 to start your game (instead of $500 by default, or more with other passwords) but not be considered bankrupt. Once you try to start blackjack or baccarat (in the latter, you can only bet on the player, and it is entirely automatic!), you can't exit as it waits for you to enter your bet amount. There is also some Engrish when you don't have enough money to play poker. You can play the pinball game with $0 however, for some strange reason it doesn't cost any money to play it!

There's also a bug in Parlour Games, where you can cheat the CPU billiards player by setting the english (position) on the ball with the D-pad (and holding) while the CPU setting the shot. This naturally causes the ball to spin when the computer hits it, often causing the white ball to hit the wrong balls or even go in the pocket after a bad cushion bounce (of which the CPU tends to use a lot).