Code: Select all
LDA #$30
STA SQ1_VOL,Y @ NOISE_VOL
JSR {
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
RTS
}
LDA #$7F
STA SQ1_SWEEP,Y @ $400D
Coupled with the games which actually vary $400D writes mid-game (sometimes within the span of one sound), there was more going on here. If we presume these rogue bytes are handled similarly to pulse sweeps, then someone could code an emulator extension which would interpret noise sweeps so we could hear how the sound designers possibly intended the games to sound.
(Note: A lot of games set $400D to a persistent value, but why is it even set at all?)
RARE (usually #08 or #43)
- A Nightmare On Elm Street
- Anticipation
- Arch Rivals
- Battletoads (1,2)
- Beetlejuice
- Cabal
- Captain Skyhawk
- Cobra Triangle
- Danny Sullivan's Indy Heat
- Digger T. Rock: Legend of the Lost City
- High Speed / PinBot
- Ivan Stewart's Super Off-Road
- Jeopardy
- John Elway's Quarterback
- Jordan vs. Bird: One-on-One
- Marble Madness
- N.A.R.C.
- Pirates!
- R.C. Pro-Am (1,2)
- Seasame Street 123
- Snake, Rattle 'n' Roll
- Solar Jetman
- Super Glove Ball
- Time Lord
- Wizards & Warriors (1,2,3)
- WWF Wrestlemania
- Kid Icarus
- Metroid
- Wild Gunman
- Ai Senshi Nicol
- Armana no Kiseki
- Bio Miracle Bokutte Upa
- Blades of Steel
- Castlevania (1,2)
- Contra
- Cosmic Wars
- Dragon Scroll
- Esper Dream
- Falsion
- Getsu Fuuma Den
- Goonies (1,2)
- Gradius
- Gyruss
- Jackal (almost feels like debugging)
- King Kong 2
- King of the Beach
- Meikyuu Jiin Debaba
- Metal Gear (1,2)
- Mission: Impossible
- Q-Bert
- Wai Wai World
- Batman (1,2)
- Blaster Master
- Dodge Danpei (1,2)
- Freedom Force
- Gremlins 2
- Journey To Silius
- Mr. Gimmick
- Platoon
- Uncle Fester's Quest
- Xenophobe
- Adventure Island (2,3)
- Bonk's Adventure
- Mendel Palace
- Star Force
- Xexyz
- Duck Tales 2
- Yo Noid!
- Fire 'n' Ice
- Ninja Gaiden (1,2,3)
- Radia Senki
- Solomon's Key
- Tecmo Baseball
- Tecmo Bowl
- Tecmo Cup Soccer
- Tecmo NBA Basketball
- Tecmo Super Bowl
- Tecmo World Wrestling
- Bio Senshi Dan
- Ginga Denshou: Galaxy Odyssey
- Metal Mech
- Bad Dudes
- Boulder Dash
- Bump 'n' Jump
- Captain America & The Avengers
- Captain Silver
- Heavy Barrel
- Karate Champ
- Karnov
- Rampage
- Werewolf
- Ikari Warriors (1,2)
- Mechanized Attack
- 8 Eyes
- Daydreamin' Davey
- Eliminator Boat Duel
- Monopoly
- Stanley: The Search For Dr. Livingston
- Star Wars: The Empire Strikes Back
- T & C Surf Designs (1,2)
- Kiki Kaikai
- Operation Wolf
- Power Blade (1,2)
- Tetrastar
- Zanac
- Flight of the Intruder
- Hammerin' Harry
- Holy Diver
- Metal Storm
- Ghostbusters II
- Super Pitfall
- Dr. Jekyll & Mr. Hyde
- Gotcha
- Karate Kid
- The Guardian Legend
- Flying Dragon
- Flying Warriors
- Wizardry
- Zombie Hunter
- Phantom Fighter
- Harlem Globetrotters
- Matchbox Motor City
- Klax
- Rampart
- Blues Brothers
- Ninjakun
- Chester Field
- Clash at Demonhead
- Golgo 13
- Kid Kool
- Robin Hood: Prince of Thieves
- Kick Challenger: Air Foot