A new version of DSemu is now available. Here is what is new in version 0.4.10:
  • Sprite support fixed. Homebrew demos with sprites should now start to work.
  • Support for some 8 bit graphics modes with palletes.
  • Fixed crash that occurred occasionally in mode 5 rendering.
  • Workaround for a thumb emulation bug that occurs with devkitpro r17 compiled programs (to be fixed properly in 0.4.11).
You can get it from here.