BlastEm ChangelogMain Page0.5.0Released June 2nd, 2017Download for 32-bit Linux
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Download SourceNew Features

• SMS emulation in the form of the Gensis/MD's backwards compatibility mode
• Added support for SMS controllers
• Support for the mapper used by Realtec games
• Support for carts with fixed value registers
• Support for enough of the XBAND cartridge hardware to allow the menu to boot
• Basic XBAND keyboard emulation
• Configurable display overscan
• Fullscreen mode can now be toggled at runtime
• Window can now be resized at runtime
• Support for "semantic" controller button names in the gamepad mapping using SDL2's game controller API
• Analog axes can now be mapped to emulated gamepad buttons or UI actions
• System soft reset
• Keyboard can now be captured when a Saturn or XBAND keyboard is connected to the emulated system
• Internal screenshots that bypass all output filtering/overscan
• Homebrew using the "SSF2 Mapper" is now supported via header detection like on the Mega Everdrive
• Directory used for SRAM, EEPROM and savestates is now configurable
• Path configuration values can now contain both BlastEm-specific and environment variable references
• Open GL based rendering can be disabled in favor of the SDL2 render API fallback

Bugfixes

• Fixed a bug that would cause a crash in certain games that have SRAM and ROM at the same address
• Fixed some issues with Z80 interrupts that caused issues with sound/music in Sonic 2 and Puyo Puyo 2
• Z80 debugger no longer crashes when resuming execution
• Undocumented Z80 instruction "out (c), 0" now decodes properly
• GDB remote debugging should now work with more recent versions of GDB
• GDB remote debugging should now work on more recent versions of Windows
• Overlapping instructions in self-modifying code no longer causes incorrect behavior
• Z80 instructions "in c" and "out c" now work correclty on 32-bit builds
• Specifying an output audio frequency higher than the FM frequency no longer deadlocks the emulator
• Fixed memory map generation for games with 3MB ROM and SRAM at the 3MB mark

Accuracy/Completeness Improvements

• YM2612 SSG-EG and CSM modes are now implemented
• VDP Mode 4 is now implemented in both Genesis and SMS mode
• Basic emulation of refresh delays has been added
• 68K interrupt latency has been made more accurate
• CRAM contention artifacts (aka CRAM dots) are now emulated
• DIVU/DIVS and MULU/MULS are now cycle accurate
• MOVEM now performs the extra ignored read and has correct timing
• The timing of serveral other 68K instructions has been fixed
• Implemented 68K trace mode
• SBCD flag calculation now matches hardware in 100% of cases
• 68K -> VDP DMA now properly has a delay at DMA start rather than at the end of the transfer
• A number of illegal effective address mode/operation combinations now properly decode as illegal instructions
• Added emulation of the slow rise time of an IO pin that was changed to an input when it was previously outputting 0
• Partial support for the VDP test register
• Partial support for the 128KB VRAM mode bit
• Improved accuracy of low level sprite rendering details
• Fixed handling of active/passive display transitions so that border extension tricks work
• Fixed handling of horizontal interrupts in extended display areas
• More accurate correspondance between horizontal counter and raster beam
• Partial emulation of serial IO registers

Other Changes

• Added Japanese version of Street Fighter 2: The New Challengers to ROM DB
• Added the following EEPROM games to the ROM DB:
  • Ninja Burai Densetsu
  • Rockman Mega World
• Added ROM DB entries for the following games with incorrect region headers:
  • Another World (E)
  • Alien Soldier (J)
  • Light Crusader (J)
  • Castle of Illusion - Fushigi no Oshiro Daibouken (J)
  • Atomic Robo-Kid (J)
• Added ROM DB entries for the following games which are incompatible with 6-button controllers:
  • King of Monsters
  • Combat Cars
  • Second Samurai
  • Dungeons & Dragons - Warriors of the Eternal Sun
• Added ROM DB entries for the following games with fixed value registers:
  • Ya Se Chuan Sho
  • 16 Zhang Ma Jiang
  • Elf Wor
  • Huan Le Tao Qi Shu: Smart Mouse
  • Mighty Morphin' Power Ranges: The Fighting Edition
  • Super Bubble Bobble MD
  • Thunderbolt II
• Added ROM DBentries for teh following games that have bad/missing SRAM headers:
  • Hardball III
  • Might and Magic - Gates to Another World
  • Might and Magic III - Isles of Terra