There is a protection (which I believe is written by Herndon Labs?) that does not work in the emulated drive. It is described in a Vice bug report a few years back and was determined to be due to timing of the SO line with regards to sync detection, as well as these tracks being written at a higher-than-standard density.
https://sourceforge.net/p/vice-emu/bugs/203/
This protection is used on many commercial games, and is the reason for a number of the entries in the "not-working" G64 list. I tried a handful on both beta-9l and beta-9h, and they did not work on either firmware. Here are some titles that I had encountered in the past which used this:
Code
- Title Publisher Tracks checked
- --------------------------------------------------------------
- 1943 (Elite) 19, 19
- 4th and Inches (Accolade) 12, 17
- Arcade Game Construction Kit (Br0derbund) 16, 17
- Alleykat (Thunder Mntn) 9, 9
- Bad Dudes vs Dragon Ninja (Data East) 17, 17
- Bank Street Speller (Br0derbund) 19
- Bank Street Writer (1985) (Br0derbund) 19
- Batman (Data East) 16, 17
- Batman: The Movie (v1.0) (Ocean) 19, 19
- Batman: The Movie (v1.1) (Ocean) 17, 17
- Blasteroids (Tengen) 17, 17
- Boot Camp (Konami) 20, 19
- Bop'N Wrestle (Mindscape) 16
- Breakthru (Data East) 17, 16
- Bubble Ghost (Accolade) 16, 17
- Cabal (Capcom) 19, 19
- Cauldron (Br0derbund) 6, 12
- Cauldron II (Br0derbund) 17, 16
- Centauri Alliance (Br0derbund) 19, 19
- Commando (Data East) 15
- Designasaurus (Britannica) 17, 17
- Doc the Destoyer (Thunder Mntn) 17, 15
- Downhill Challenge (Br0derbund) 17, 17
- Express Raider (Data East) 11, 6
- Fairlight (Mindscape) 19
- Forgotten Worlds (Capcom) 19
- Frightmare (Accolade) 19, 19
- Guerrilla War (Data East) 17, 16
- Head Over Heels (Mindscape) 7, 7
- High Roller (Mindscape) 16
- Hyper Sports (Konami) 19, 19
- Ikari Warriors (Data East) 17, 17
- Implosion (Thunder Mntn) 19, 19
- Indoor Sports (Mindscape) 19
- Infiltrator (Mindscape) 16
- Jackal (Konami) 16
- Jet Boys (Avantage) 17, 15
- Karnov (Data East) 16, 17
- Kid Niki: Radical Ninja (Data East) 18, 19
- Karateka (alt, not xelock) (Br0derbund) 17, 17
- Kung Fu Master (Data East) 17
- Leviathan (English Soft.) 18, 19
- License to Kill (Domark) 17
- Life Force (Konami) 17
- Lode Runner (yellow label) (Br0derbund) 17, 16
- Maniac Mansion (Lucasfilm) 17, 17
- Mental Blocks (Accolade) 14, 14
- Mikie (Action City) 17, 16
- Mini-Putt (Accolade) 19, 19
- Paradroid (Thunder Mntn) 10, 10
- Parallax (Mindscape) 6, 6
- Q-Bert (Data East) 17
- Robocop (Data East) 12, 17
- Rush'N Attack (Konami) 17, 16
- Speed Buggy (Data East) 16, 16
- Star Control (Accolade) 21, 21
- Star Wars (Br0derbund) 17, 17
- Stratego (PAL) (Accolade) 17, 17
- Strike Aces (Accolade) 17
- Superbike Challenge (Br0derbund) 17, 16
- Tag Team Wrestling (Data East) 17, 17
- The Cycles (Accolade) 17, 17
- TNK III (Ocean) 9, 9
- Top Gun (Thunder Mntn) 17, 15
- Trailblazer (Mindscape) 12, 12
- Uchi-Mata (Mindscape) 11, 11
- Uridium (Data East) 9, 9
- Victory Road (Data East) 23, 19
- Vigilante (Data East) 23, 24
- Warlock (Three Sixty) 17
- Wizball (Mindscape) 4, 5
- Yie Ar Kung Fu (Konami) 8, 17
- Yie Ar Kung Fu II (Konami) 17, 16