ZXDS is an upcoming emulator of Sinclair ZX Spectrum for Nintendo DS, written by Patrik Rak. It is still in a very early stage of development, but it already has some noteworthy features, like emulation of Spectrum 128k (including sound) or TAP/TZX support.
+ Both TAP and TZX tape files are now loaded at high speeds whenever possible.
+ Z80 snapshots are now supported.
+ Save state support via in-memory/on-card write-through save slots for 10 Z80 snapshots.
! Happy birthday, Speccy...