Saturday, April 2, 2011

Genesis Plus GX 1.5.0

by EkeEke
Genesis Plus is a Sega Genesis / Sega Megadrive / Sega Master System emulator. This is a port of Charles MacDonald's Genesis Plus to the Wii, with a lot of improvements.

INFO
=====
-Preferred PAL Mode: Any (automatic TV mode detection, no more PAL60 version needed).
-Display mode : 480p, 480i, 576i, 240i, 288i, 288p and 240p
-Supports Zip compressed rom images.
-Genesis 4 players multitap adapters (Sega TeamPlayer and EA 4-Way Play) support
-Game Genie & Action Replay cheat code support
-Sega Mouse
-Sega Activator
-Sega Menacer & Konami Justifier lightguns. 2 lightgun has the same time supported.
-SVP DSP (Virtua Racing)
-Master System compatibility mode
and a lot more, read the included user manual for details.

CHANGELOG v1.5.0
================
Core/VDP
---------
added support for Master System compatibility mode (Z80 ports access mode), incl. Mode 5 rendering.
added Mode 4 rendering for both Genesis & Master System modes.
added alternate BG planes rendering functions (should be faster on PPC architectures).
Core/IO
added support for Master System compatibility mode (Z80 ports access mode).
added Master System peripherals emulation (Control Pad, Paddle, Sports Pad & Light Phaser).
added XE-1AP (analog controller) emulation.
added Activator emulation.

Core/Extra]
------------
-added support for all known Master System cartridge mappers.
-added copy-protection hardware emulation for a few MD unlicensed games: fixes 777 Casino (crash when talking to bunny girls).
(NB: most of those unlicensed games seem to have been already patched by ROM dumpers, main purpose is documenting them)
-added support for Top Shooter arcade board controller. (A=Shoot, B=Bet, C/RIGHT=Coins, START=Start, hold UP on startup to enter service mode)
-improved King of Fighters 98 mapper emulation (registers address decoding is now 100% accurate)
-fixed Game Genie when several codes affect same ROM address.
-fixed EEPROM types for Brian Lara Cricket & NBA Jam TE (verified on real cartridges)

Core/General
------------
-added Master System compatibility mode emulation (automatically enabled when loading ROM file with .sms extension).
-improved savestate stability & compatibility (support for old 1.4.x savestates is preserved)
-various code cleanup & comments.

Gamecube/Wii
-------------
-fixed cheat codes handling when several codes affect same ROM address.
-improved input controller detection on menu exit.
-improved key remapping dialog box to match emulated device
-changed Menu key for Gamecube controller to allow MODE button mapping
-fixed DVD not being unmounted on swap (memory leak)

Wii only
--------
-added USB mouse support for Sega Mouse emulation
-compiled with latest libogc: improves USB compatibility & fixes stability issues with Wiimotes.

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