Sega Master System

Well, I was playing Phantasy Star on my Master System this morning, and it was extremely slow going, so I decided to go and use my emulator and speed it up a bit. Currently I'm using Massage for all my Sega Master System emulation needs, but there's one I have for the Super Nes, ZNes, that has a really cool memory search/patch feature. Does anyone know of a SMS emulator that does this? Also one for Genesis would be nice. I still prefer playing my Genesis over the emulator because of the controller, but that might be able to give me some entertaining game genie codes for Sword of Vermillion that I could convert to the Game Genie format for the real deal.

Any help would be much appreciated!

Gens is a good Genesis emulator. Google "Gens" Good amount of functions, but cant do memory tricks really. Can be windowed for size though.