DeSmuME is software that allows you to emulate a Nintendo DS system. Think of
it as a Swiss-Army knife for Nintendo DS emulation, giving you access to many
powerful tools for testing DS features, from viewing ROM properties to managing
Action Replay cheats. And best of all, this software is completely free and
open-source.

 

General/Core:
 bug: fix more IPC FIFO errors
 bug: import more save files correctly
 bug: don't autopatch already-patched roms
 bug: fix bugs in piano and guitar grip
 bug: fix ARM7's VRAMSTAT register
 bug: fix memory leaks on compact flash emulation
 bug: fix reading of rom from low header area
 bug: spu: fix some poppy interpolation audio quality issues
 bug: improve timing of dma operations by running through normal mem cycle accounting; fixes an annoying number of games and graphical glitches
 bug: fix opcode MRC and fake bios CRC16
 enh: jitter some related register and irq events to simulate pipeline effects and stimulate some race conditions to other outcomes
 enh: fake (deterministic) some tiny jitter from human's hand holding stylus; some games were accidentally depending on this
 enh: support nocash-stylep rints from arm
 enh: add lua apis for accessing vram
 enh: platforms other than windows receive threading optimizations
 enh: provide diagnostics when system powers off (useful for homebrewers returning from main())
 enh: clarify handling of different console types within the family (ds,dslite,debug)
 enh: vfat support for slot-1 devices
 enh: emulate temperature register
 enh: add paddle emulation

Graphics:
 bug: fix occasional crash from uninitialized blending table
 bug: fix some 2d alpha blending cases resulting in white screens
 bug: fix VRAM_I B_OBJ mirroring and fix sprites rendering across the end of vram
 bug: fix rotoscaled sprites wrapping around screen
 bug: dont fix rotscaled bitmap sprites with alpha==0
 bug: opengl: fix degradation of toon rendering during loadstate
 bug: opengl: alpha blending fixes
 bug: many refinements to opengl renderer
 bug: opengl: support rear-plane/ClearImage emulation (fixes many graphics)
 bug: rasterizer: fix some rare alpha blending cases
 bug: fix bug in environment mapping introduced after 0.9.6
 bug: fix totally glitched out 3d graphics with several improvements involving matrix stack
 bug: fix memory overflows in epx filter
 bug: prevent backdrop from blending with ???
 enh: opengl: better depth buffering emulation
 enh: better support for line segment "polys" by detection and special rendering logic
 enh: opengl: support quad primitives directly
 enh: add hq4x filter
 
Windows:
 bug: fix a long-standing loadstate crash
 bug: fix lag frame accounting
 bug: fix glitches in cheat entry menu
 bug: stop compact flash emulation from accidentally scanning c:\ sometimes
 enh: add support for game database for improved save type detection
 enh: hotkey for limit framerate toggle
 enh: remove stop and reset toolbar buttons which were accidentally getting used
 enh: additional complexification to desmume's behaviour run from a console prompt. whether it's better is uncertain.
 enh: add support for cheats databases
 enh: improvements to ram search tool
 enh: preliminary support for varying stylus pressure
 enh: add [Display] Show Console=1 to ini file
 enh: more graceful cheat parsing and add some hotkeys
 enh: add 5x window size
 enh: add big endian and 20.12 toggle to memview and ramwatch
 enh: improve FPS throttle feedback and granularity
 enh: add lua menu API
 enh: hud font switching
 enh: add optional file association for .nds to path config dialog

Cocoa:
 enh: Big update to cocoa frontend. Pretty much entirely new. (rogerman)

Linux:
 bug: gtk: glitches in rom and recent rom loading
 bug: glade: normalize savestate slot to hotkey mapping
 enh: support soundtouch for use by metaspu
 enh: gtk: add SPU mode selection (Tobias Jakobi)
 enh: cli: better fps limiting (Thomas Jones)
 
Wx:
  bug: some small fixes here and there (Jan B?ken)
  enh: lot of code cleanup (Jan B?ken)