The following are known Action Replay Codes for Resident Evil 2 on SEGA Dreamcast.
Start With Infinite Health
3CA9151A000000C8
Start With Infinite Ammo Slot 1
F73DE7EC00000063
Start With All Weapons In Crate
5207463D0000FE02
A4C360FB0000FE03
DAE8B2B50000FE04...