BlastEm est un émulateur Genesis/Mega Drive extrêmement précis, conçu pour fonctionner sur du matériel relativement modeste en utilisant des techniques d’émulation avancées. Il prend également en charge le Mega CD, le 32X, la Sega Pico, la Game Gear, la Master System, le SC-3000/SG-1000, le ColecoVision et le Yamaha Copera. Le Heartbeat Personal Trainer, nécessaire notamment pour Outback Joey et d’autres jeux HPBT, ainsi que le Sega Multitap sont également supportés.
Voici quelques caractéristiques :
– Sauvegardes d’état (savestates)
– Émulation de la Mega/Sega Mouse
– Émulation des claviers XBAND et Saturn
– Émulation des cartouches lock-on Sonic & Knuckles et XBAND
– Prise en charge de la RAM de sauvegarde et des EEPROM
– Prise en charge des homebrews utilisant le mapper SSF2 (avec heuristiques Mega Everdrive)
– Modes turbo et ralenti
– Filtre passe-bas configurable
– Shaders GLSL
– Sélection du modèle de Genesis/Mega Drive (pour reproduire les spécificités matérielles)
– Enregistrement audio au format VGM
– Affichage en vue oscilloscope
– Lecteur multimédia intégré (compatible formats VGM, WAVE et FLAC)
– Enregistrement vidéo en APNG avec piste audio WAVE
– Débogueurs 68K et Z80 intégrés avec langage de script Turing-complet
– Débogage à distance via GDB
– Points d’arrêt (watchpoints) sur la mémoire 68K et les registres/RAM du VDP
– Visualisation avancée de la palette et des plans du VDP
– Prise en charge des manettes et joysticks
– Interface intégralement contrôlable au clavier ou à la manette
– Reconfiguration à chaud des contrôleurs
– Prise en charge de la mise à l’échelle DPI (DPI scaling)
– Prise en charge des chemins de fichiers Unicode et longs sous Windows
– Mode d’utilisation portable (sans installation)
Les changements sont les suivants:
Newly Supported Hardware
– Sega/Mega CD
– Sega 32X
– Sega Pico
– Yamaha Copera (OPL3 emulation missing, but all known games are playable)
– Game Gear
– SC-3000/SG-1000
– Colecovision
– Hearbeat Personal Trainer peripheral (needed for Outback Joey and other HPBT games)
– Sega Multitap
Quality of Life Improvements
– Nuklear UI now works even if OpenGL is disabled/unavailable
– Nuklear UI can now be navigated by keyboard or game controller
– Controller type and SDL2 mapping can now be changed after initial configuration
– Controllers are now ordered based on which one receives input first
– Implemented DPI scaling
– Added multiple new shaders, including some 3rd party contributions
– Added option to use system file picker on Windows and Linux (GTK only for the latter)
– Added support for Unicode and long paths on Windows
– Some 6-button style controllers now have correct mappings out of the box
– New option to save config files in the application folder for « portable » setups
New Features
– Genesis/Mega Drive model selection: Enables emulation of model-specific hardware quirks
– VGM logging
– Oscilloscope View
– New media player mode that can play VGM files along with WAVE and FLAC files
– « Video » recording (APNG + WAVE)
Debugging Improvements
– Completely reworked the CPU debuggers with a turing complete scripting language
– Added watchpoints for both 68K memory and VDP registers/RAM
– Enhanced palette viewer
– Enhanced VDP plane viewer
– Implemented KMod logging extensions
Accuracy Improvements
– Separated comopsiting from final output. Fixes minor glitch in the DF Retro Direct Color DMA demo
– Reworked sprite rendering phase 3 to better match documentation by Kabuto/TiTan. Fixes Alex Kidd minigame
– Fixed reading version reg from Z80 and open bus reads from VDP test reg
– Fixed YM2612 busy flag timing
– Fixed a Z80 interrupt edge case which broke the music in Metal Blast 2277
– Improved open bus emulation
– Fixed some edge cases in VDP address/command register updates. Fixes the Mona in 344 bytes demo.
– Fixed timing of a number of 68K instructions
– Fixed YM2612 Timer B load behavior that caused slow music playback in the Konami driver
– Implemented VDP read latency and invalid write delays
– Fixed YM2612 key scaling in CH3 special mode. Fixes sound effects in Toy Story and Maui Mallard
– Fixed VDP rendering behavior when all planes are disabled via the VDP test register
– Implemented additional YM2612 pan « leakage » present on real hardware
– Implemented undocumented Z80/PSG clock speed bit in VDP test registers
– Fixed handling of auto-release in SSG-EG without HOLD. Fixes whistle sound effect in Strikers
Bugfixes
– Fixed crash when pressing escape with no ROM loaded
– Fixed immediate cancel in keybinding view when mouse was positioned where cancel button appears
– Fixed crash when changing video screen settings when in full-screen
– Fixed crash when loading save states in games with the « SRAM » variant of the Sega mapper
– Fixed crash when repeatedly reloading a ROM or a sequence of different ROMs
– Fixed a bug in the implementation of the ‘in (c)’ Z80 instruction
– Fixed crash when loading new ROM via drag & drop when existing ROM has lock-on
– Fixed a number of bugs in the controller mapping UI
Other Changes
– Added a 64-bit Windows build
– Added new 68K and Z80 interpreters for building on non-x86/x86-64 targets
– Added an experimental web build
– Added ROM DB entries for a number of games that needed them
– Some very early work on LaserActive that emulates some parts of the PAC-less base player
