SugarDS v1.3 is an Amstrad CPC emulator for Nintendo DS and DSi by Nige Rideout (github). This version features :

• Use [[CPM]] in title of .dsk file to launch game via |cpm
• Improved FDC emulation so games like BAT load
• Improved PPI emulation so keyboard scanning works in games like Barbarian
• Fixed the map keys handling so changing the first key slot doesn't always revert back to 'A'
• Other minor improvements and tweaks under the hood

And if you are curious and you go check his Github profile, you will see that he has written several other emulators for Nintendo DS and DSi.