Here I plan to list ROM images that are found in the various collections that I have been unable to run, or that only run with implausible emulator behavior. Any information on them is appreciated.
ROM CRC32=032ae837, GoodNES 3.23b's "Street Fighter II - The World Warrior (Unl) [a3][!]". Starts with an unknown write to $6808, and has a bad NMI vector. If it weren't for the [!] tag, I would assume this was some kind of multicart rip.
ROM CRC32=193F3412, GoodNES 3.23b's "Mortal Kombat (JJ-01) (Ch) [!]". Seems MMC3-like (and is set to mapper 4), but at some point start executing data as code.
ROM CRC32=FFB3E74A, GoodNES 3.23b's "King of Fighters 97, The (AKA Colour 2001 Streetfighter II) (Unl) [!]". Seems to be an MMC3 hack of "King of Fighters 97, The (Rex Soft) (Unl) (U)[!]" (which emulators so far only support in UNIF format). Does not run in the current emulators I tried, but it does run in older ones. The difference seems to be whether the emulator assumes that the power-on value of register $4017 is $00 (which freezes the game due to non-stop firing of Frame IRQs), or $40 with allows the game to run. Given that it is
documented that the default value is $00, I wonder how this could ever work on real hardware.
ROM CRC32=08F3544B, GoodNES 3.23b's "King of Fighters 99, The (Unl)". Same issue with this name hack.