Wii7800 is a port of the ProSystem emulator developed by Greg Stanton. Additional changes developed by Ludovic Jacomme aka Zx-81 (PSP port), Leonis, and gdement.
Changelog
0.3 - March 29, 2010
GX based scaler (smoother scrolling in Plutos, Xevious, Motor Psycho)
Ability to adjust screen size to any size/dimensions via the "Screen Size" option under "Display". If this is entered after loading a cartridge, the last frame will be displayed to assist in sizing.
Fixed graphical glitches in Ballblazer
Implemented RANDOM (read) and SKCTLS (write) for Pokey sound emulation
Ballblazer now plays all sounds
Minor refactor of Pokey code
Some minor adjustments to the Light Gun related code
Updated palette (from Underball)
Updated menu code, GX rendering of dip switches and debug information
Ability to set HBLANK period, Dual-analog support in ProSystem database