ZXDS is an emulator of Sinclair ZX Spectrum for Nintendo DS, written by Patrik Rak. It is steadily reaching a mature stage of development, and it already has some noteworthy features, like accurate emulation of Spectrum 48k, 128k and Pentagon models (including sound), or support for TAP/TZX/PZX tape files, TRD/SCL disk files and RZX playback files.

Changes:

* The paused time is now not counted towards the current file times.
* The sleep time is now not counted towards any times but sleep time.
* Fixed the stats date display.

http://zxds.raxoft.cz/