mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
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f21a08ebfa
.improved Z80 bus reset accuracy .improved Z80 locks & VDP access accuracy .improved soft-reset accuracy .adjusted Horizontal Counter timing in H32 mode (fixes Sonic 3D Blast 'bonus' levels) .updated win32 port to compile with recent changes .input code cleanup [GCN] .fixed soft-reset (reset switch should also works now) IMPORTANT: Because of some internal changes, saved states from previous revisions are not compatible ! |
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| .. | ||
| dos | ||
| win | ||
| CHANGELOG.txt | ||
| PORTING.txt | ||
| README.txt | ||
----------------------------------------------------------------------------
Genesis Plus
----------------------------------------------------------------------------
Version 1.2a
by Charles Mac Donald
WWW: http://cgfm2.emuviews.com
additional code by Eke-Eke
WWW: http://gxdev.wordpress.com/
What's New
----------
see CHANGELOG
Features (NEW!)
---------
* cycle-accurate CPUs emulation & synchronization (68000, Z80, YM2612, SN76489)
* cycle-accurate VDP emulation (DMA, FIFO, HV interrupts, HBLANK,…)
* original frequency YM2612 emulation (High Quality FM)
* basic hardware latency emulation
* full overscan area (horizontal & vertical colored borders) emulation
* TMSS BIOS support
* PICO hardware support (experimental)
* 3-buttons & 6-buttons controllers
* Sega Team Player & EA 4-Way Play multitap adapters (up to 8players !)
* Sega Menacer & Konami Justifier lightguns
* Sega Mouse & Sega Mega Mouse
* SVP DSP (Virtua Racing)
* J-Cart
* backup RAM (parallel SRAM/FRAM and serial EEPROM)
* ROM bankswitch (Super Street Fighter 2)
* SRAM switch (Phantasy Star 4, Legend of Thor, Sonic the Hedgehog 3)
* ROM mappers & copy protection devices used in many unlicensed/pirate cartridges
Usage
-----
The Windows version runs windowed in a 16-bit desktop with NO sound or
joystick support.
The DOS version has most of the functionality from SMS Plus, such
as audio, joysticks, etc.
Windows/DOS controls:
Arrow Keys - Directional pad
A,S,D,F - 1P gamepad, buttons A, B, C, Start
Tab - Hard Reset
Esc - Exit program
F7 - Load Savestate (game.gpz)
F8 - Save Savestate (game.gpz)
F9 - Toggle CPU clock: PAL(50hz)/NTSC(60hz)
F10 - Soft Reset
F11 - Toggle Player # (keyboard/mouse)
DOS only:
End - Exit program
F1-F4 - Set frameskip level (F1 = no skip ... F4 = skip 3 frames)
F5 - Log 68k memory access (for debug ONLY)
F6 - Log messages (for debug ONLY)
WIndows only:
End - Exit program
F1-F4 - Set frameskip level (F1 = no skip ... F4 = skip 3 frames)
F5 - Log messages (for debug ONLY)
F6 - Toggle Turbo mode
The mouse can be used for lightgun games, PICO games and when the Sega Mouse is activated.
A SRAM file (game.srm) is automatically saved on exit and loaded on startup.
DOS details:
You can only support a second player if you are using a joystick driver
that supports more than one joystick. (e.g. Sidewinder, dual pads, etc.)
Type 'gen -help' on the command line for a list of useful options.
-res <x> <y> set the display resolution.
-vdriver <n> specify video driver.
-depth <n> specify color depth. (8, 16)
-scanlines use scanlines effect.
-scale scale display to full resolution. (slow)
-vsync wait for vertical sync before blitting.
-sound enable sound. (force speed throttling)
-sndrate <n> specify sound rate. (8000, 11025, 22050, 44100)
-sndcard <n> specify sound card. (0-7)
-swap swap left and right stereo output.
-joy <s> specify joystick type.
Here is a list of all the video drivers you can pass as a parameter
to the '-vdriver' option:
auto, safe, vga, modex, vesa2l, vesa3, vbeaf
Here is a list of all the joystick drivers you can pass as a parameter
to the '-joy' option:
auto, none, standard, 2pads, 4button, 6button, 8button, fspro, wingex,
sidewinder, gamepadpro, grip, grip4, sneslpt1, sneslpt2, sneslpt3,
psxlpt1, psxlpt2, psxlpt3, n64lpt1, n64lpt2, n64lpt3, db9lpt1, db9lpt2,
db9lpt3, tglpt1, tglpt2, tglpt3, wingwar, segaisa, segapci, segapci2
You can put any commandline option into a plain text file which should
be called "gen.cfg". Put one option per line, please. Command line options
will override anything in the configuration file.
Currently the zip loading code can manage a zipfile where the game
image is the first thing in it. If you try to open a huge archive of
games, only the first will be played.
Credits and Acknowlegements
---------------------------
I would like to thank Omar Cornut, Christian Schiller, and Chris MacDonald
for their invaluable help and support with this project.
Richard Bannister for the Macintosh port and all of the code fixes and
suggestions that have made Genesis Plus a better program.
(http://www.bannister.org)
Extra features, emulation accuracy & game compatibility improvments by Eke-Eke
(from the Gamecube/Wii port: http://code.google.com/p/genplus-gx )
The Genesis emulator authors: Bart Trzynadlowski, Quintesson, Steve Snake,
James Ponder, Stef, Gerrie, Sardu, Haze, Notaz, Nemesis, AamirM
The regular people and many lurkers at segadev.
People from SpritesMind.net forums
The MAME team for the CPU and sound chip emulators.
Maxim for his SN76489 emulator
Stef (again) for his alternate YM2612 emulator
Notaz for his SVP emulator
Tasco Deluxe for his documentation of Realtec mapper
Erik de Castro Lopo for his "Secret Rabbit Code" library aka libsamplerate
Jean-Loup Gailly and Mark Adler for their useful zip library
Contact
-------
Charles MacDonald
E-mail: cgfm2@hotmail.com
WWW: http://cgfm2.emuviews.com
Eke-Eke
E-mail: eke_eke31@yahoo.fr
WWW: http://gxdev.wordpress.com/
Legal
-----
Copyright (C) 1999, 2000, 2001, 2002, 2003 Charles MacDonald
The source code is distributed under the terms of the GNU General Public
License.
The Z80 CPU emulator, 68K CPU emulator, and the YM2612 emulation code
are taken from the MAME project, and terms of their use are covered under
the MAME license. (http://www.mame.net)