GB/GBC模擬器 SameBoy 發布新版，更新如下 :
New/Improved Features
- The Cocoa and SDL ports can now rewind the game using a configurable key
- The libretro port can now be compiled for Haiku and Wii U
- The libretro port now has split-screen link cable emulation
- The Cocoa and SDL ports can now under-clock the emulator for a “slow motion” effect
- A new LCD screen filter for both the Cocoa and SDL ports
- The new PPU and timing system introduced an up to 100% performance boost (More details in “Accuracy Improvements/Fixes”)
- A new debugger operator –
{...} can now be used to dereference a pointer to a 16-bit value
- Fullscreen support in the SDL port
- Improved audio in the Windows SDL port, on supported versions of Windows
- The
delete and unwatch debugger commands are now less strict
- Added joystick hat support to the SDL port
- The Cocoa port now uses Metal on supported Macs for better performance on laptops and less capable desktops
- The Cocoa port now allows specifying a boot ROMs folder, so it can be used with the original boot ROMs
- Improved the Cocoa debugger, it is now more responsive and no longer truncates output
- The
lcd debugger command now shows more accurate details about what the PPU is currently doing
- The SDL port now has proper joypad configuration, similar to the Cocoa port
- The SDL port now has more consistent joypad menu navigation, in comparison to keyboard navigation
- Improved analog stick controls in both ports
Accuracy Improvements/Fixes
- This version introduced major accuracy improvements, making SameBoy able to pass:
- Improved emulation of analog characteristics of the APU for more accurate sound
- Emulation of an open-bus-like quirk behavior in GDMA and HDMA
- A whole new T-cycle accurate PPU:
- Accurate interrupt timing and blocking
- Sprite timings are now accurate
- Pixel pushing timing is now accurate, for pixel-perfect emulation of Prehistorik Man
- Has accurate memory and register access timings
- Accurate emulation of several timing edge cases related to the
halt instruction
- Accurate emulation of a DMA bus quirk on the DMG
- Complete and accurate emulation of the OAM bug, including cases not tested by Blagg’s tests
- Fixed a regression in dmg_sound-2
- Several accuracy fixes in SameBoy’s built-in boot ROMs
- DMA now blocks PPU OAM access
- Correct emulation of wiring both sets of buttons in JOYP
- Fixed a bug where HDMA and GDMA were 4 times faster than they should have been
- I/O register access conflicts are now emulated, including behavior differences between models
- Improved accuracy of the
halt bug
- Correct emulation of the DMG
STAT-write bug, which is just a specific case of I/O register access conflict
- Emulated an APU glitch where in some edge cases a
DIV-triggered APU event is skipped
Bug Fixes
- Minor text adjustments in both the Cocoa and SDL ports
- Fixed the Android build of the libretro port
- The
call instruction is now properly symbolicated
- Fixed an issue that caused the Cocoa port to play a beep sound when certain buttons were pressed
- Fixed several graphical issues with some of the filters
- Worked around an SDL bug introduced in the macOS port of SDL
- Fixed a bug where SameBoy froze after leaving turbo mode
- Fixed a bug where the Windows port could not handle Unicode paths
- Fixed a bug where the debugger wrote to the wrong CGB RAM bank
- Fixed a bug where debugging symbols were not properly reloaded
- Fixed save states in the SDL port
- Fixed a bug where battery saves were not always saved in the SDL port
- Fixed a bug where the
SWAP instruction was incorrectly disassembled as RLC
- Fixed a bug where the Cocoa memory viewer would play a beep sound and show a warning after resetting the emulator
Misc Internal Changes
- API refinements
- Minor improvements to the Windows build system
- Documented several differences between DMG revisions and CGB revisions, and between DMG and MGB. SameBoy now explicitly targets DMG-CPU-B and CGB-CPU-E, and hopefully more revisions in the future
- The official Windows binaries now use SDL 2.0.8
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