EDIT 3 (30 April 2013): Awesome job! Thanks!
EquitasInvictus marked this as the best answer
I present to you junk.bin:
I started off trying to find my way through the game's assembly, but I got lost almost instantly. I then turned to playing around with editing memory values to try to flip whatever bit caused the slideshow to run. I eventually found where the game was keeping track of the menus, and noticed that one of the values changed depending on which menu you were in. If you edit the value and select a menu on-screen, it would change to the menu corresponding with the memory value, regardless of what you select in the game. After plugging in a bunch of numbers into that address, eventually the slideshow appeared!
It's not as good as getting the code, but it can be accessed by using a gameshark with the code 8013CEBF 0038 and selecting any menu option. I did this with an emulator, so I'm not sure if it works on a N64 hardware.
Original Post: As it was attempted during the TNT stream tonight, I'm curious as to how much progress has been made with the "junk.bin" code hidden in NHL Breakaway 98 that has been "never before seen." At this point I would consider it among the rarest Easter Eggs ever.
I know someone updated a snippet from a dump that hinted on Dave Lang's code but I'm not sure if anyone was able to trace back the hex to any key mappings since everyone involved (Dave Lang and Tom Carbone who even created it) doesn't remember it anymore.
EDIT 1: I messed up and forgot to make it clear that Dave Lang and Tom Carbone might each have written a slightly different version of the code so there may actually be two different codes. Not sure if they're for the same junk.bin or different parts of it, however. Thanks for bringing reminding me to make that clear, @video_game_king.
EDIT 2: Here is the dump snippet for what appears to be Dave Lang's cheat from what was said to be a dumped ROM of NHL Breakout 98 (let me know who to credit):