DS emulator and rom
click this link here https://www.coolrom.com/emulators/nds/81/NO%24GBA.php to download DS emulator
click this link here https://www.coolrom.com/roms/nds/ to download DS rom (games)
Here Is All The Pokemon Games https://www.coolrom.com/dlpop.php?id=17194For pokemon Diamond.This For Pearlhttps://www.coolrom.com/dlpop.php?id=16933 .https://www.coolrom.com/dlpop.php?id=17310For Pokemon HeartGold Intructions For Emulator Coming