Comments from the source
I'm not sure if this is correct or if it is all of them, but here are some comments from the source.
// Most new games are ucode 5 - thanks CyRUS64// ucode 0 - Mario
// ucode 1 - GBI1
// ucode 2 - Golden Eye
// ucode 3 - S2DEX GBI2
// ucode 4 - Wave Racer
// ucode 5 - BGI2
// ucode 6 - DKR
// ucode 7 - S2DEX
// ucode 8 - Star Wars - Rogue Squadron,
// ucode 9 - Perfect Dark
// ucode 10 - Conker
// ucode 11 - Gemini
// ucode 12 - Silicon Valley, Spacestation
// ucode 13 - modified ucode S2DEX
// ucode 14 - OgreBattle Background
// ucode 15 - ucode 0 with sprite2D