mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2025-01-01 14:11:49 +01:00
147 lines
5.3 KiB
Plaintext
147 lines
5.3 KiB
Plaintext
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DISCLAIMER:
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THIS IS A VERY BASIC & UNSTABLE PORT WHICH ONLY PURPOSE
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IS TO SHOW HOW TO USE GENESIS PLUS GX CORE & INTERFACE IT
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WITH SDL2 IN PARTICULAR. BUILDS ARE NOT MEANT TO BE REALLY
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USED FOR ANYTHING ELSE BUT EASIER CORE DEBUGGING ON WINDOWS.
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PLEASE DO NOT DISTRIBUTE WIN32 BINARIES WITHOUT THIS NOTICE.
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END USERS SHOULD PREFERABLY USE LIBRETRO PORT WITH RETROARCH.
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----------------------------------------------------------------------------
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Genesis Plus (SDL2 Port)
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----------------------------------------------------------------------------
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based on the original version 1.3
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by Charles Mac Donald
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WWW: http://cgfm2.emuviews.com
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version 1.7.4
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backported from Genesis Plus GX
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by Eke-Eke
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WWW: http://code.google.com/p/genplus-gx
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E-mail: ekeeke31@gmail.com
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What's New
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----------
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see CHANGELOG.txt
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Features
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---------
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* accurate emulation of SG-1000, Mark-III, Master System (I & II), Game Gear, Genesis / Mega Drive, Sega / Mega CD hardware models (incl. backwards compatibility modes)
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* NTSC (60Hz) & PAL (50Hz) video hardware emulation
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* accurate CDD, CDC & GFX chip emulation (Sega/Mega CD)
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* CD-DA fader emulation (Sega/Mega CD)
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* Mode 1 cartridge support (Sega/Mega CD)
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* highly accurate 68000 & Z80 CPU emulation
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* highly accurate VDP emulation (all rendering modes, mid-line changes, undocumented registers,<2C>) & timings (HBLANK, DMA, FIFO, HV interrupts,<2C>)
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* sample-accurate YM2612,YM2413, PSG, & PCM emulation (all sound chips are running at the original frequency)
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* cycle-accurate chip synchronization (68000<30>s/Z80/YM2612/PSG/PCM)
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* high-quality audio resampling using Blip Buffer
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* basic hardware latency emulation (VDP/68k, Z80/68k)
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* full overscan area emulation (horizontal & vertical color borders)
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* optional Game Gear extended screen mode
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* internal BOOT ROM support (Master System, Genesis / Mega Drive, Sega / Mega CD)
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* optional TMSS hardware emulation (Genesis / Mega Drive)
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* support for Blargg's software NTSC filters
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* preliminary PICO emulation
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* support for raw (.bin, .gen, .md, .sms, .gg & .sg) and interleaved (.smd & .mdx) ROM files
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* support for CUE+BIN, ISO+OGG & ISO+WAV CD image files
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* 2-buttons, 3-buttons & 6-buttons controllers emulation
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* Sega Team Player & EA 4-Way Play multitaps emulation
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* Sega Mouse emulation
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* Sega Paddle Control & Sports Pad analog emulation
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* Terebi Oekaki tablet emulation
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* Sega Light Phaser, Menacer & Justifiers lightgun emulation
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* Sega Activator & XE-1AP analog controller emulation
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* SVP DSP (Virtua Racing) emulation
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* J-Cart adapter (Micro Machines & Pete Sampras series, Super Skidmarks) emulation
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* Backup RAM (max. 64KB), I2C (24Cxx), SPI (95xxx) & MicroWire (93C46) EEPROMs emulation
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* Sega/Mega CD RAM cart (max. 512KB) emulation
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* <20>official<61> ROM bankswitch hardware (Super Street Fighter 2) emulation
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* <20>official<61> backup RAM bankswitch hardware (Phantasy Star 4, Legend of Thor, Sonic the Hedgehog 3) emulation
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* support for all known unlicensed/pirate cartridges bankswitch & copy protection hardware
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* emulation of all known Master System & Game Gear cartridge <20>mappers<72> (incl. unlicensed Korean ones)
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* Game Genie & Action Replay hardware emulation
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* Sonic & Knuckles <20>Lock-On<4F> hardware emulation
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* support for ROM image up to 10MB (Ultimate MK3 hack)
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Usage
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-----
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The Windows version runs windowed in a 16-bit desktop with 48Hz sound using SDL but
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without joystick support.
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Controls
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-----
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Arrow Keys - Directional pad
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A/Q,S,D,F - buttons A, B(1), C(2), START
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W,X,C,V - buttons X, Y, Z, MODE if 6-buttons controller is enabled
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Tab - Hard Reset
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Esc - Exit program
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F2 - Toggle Fullscreen/Windowed mode
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F4 - Toggle Audio (Turbo mode must be disabled first)
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F6 - Toggle Turbo mode (Audio must be disabled first)
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F7 - Load Savestate (game.gpz)
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F8 - Save Savestate (game.gpz)
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F9 - Toggle VDP mode: PAL(50hz)/NTSC(60hz)
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F10 - Soft Reset
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F11 - Toggle Border emulation
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F12 - Toggle Player # (test only)
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The mouse is used for lightguns, Sega Mouse, PICO & Terebi Oekaki tablet (automatically detected when loading supported game).
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A SRAM file (game.srm) is automatically saved on exit and loaded on startup.
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Credits
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--------
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Core(s) improvements & additional features by Eke-Eke
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Original code by Charles MacDonald
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Original Z80 core by Juergen Buchmueller
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Original Musashi 68k core by Karl Stenerud
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Original YM2612/YM2413 cores by Jarek Burczynski & Tatsuyuki Satoh
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Original SN76489 core by Maxim
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Original SVP core by Notaz
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Blip Buffer & NTSC Video filter libraries by Shay Green (Blargg)
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3-Band EQ implementation by Neil C
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TREMOR VORBIS decoding library by Xiph.org
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Zlib by Jean-Loup Gailly & Mark Adler
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Aknowledgements
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----------------
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The following emulator authors: Bart Trzynadlowski, Steve Snake, Stef, Notaz, AamirM
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The regular people at spritesmind.net and smspower.org.
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The MAME team for the CPU and sound chip emulators.
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Nemesis for the researches on the YM2612 and VDP.
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Tasco Deluxe for the documentation of Realtec mapper.
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Haze for the reverse-engineering of many unlicensed games protection.
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