Posted by Stryfe:
Chui has released new updates to his already very great AES4ALL, and NEO4ALL, emulator lines.
Chui wrote:
Sorry the long delay, but I have a good news: A new release of NeoGeo emulators AES4ALL and NEO4ALL for Dreamcast and Dingoo (legacy Dingux).
Now, AES4ALL has SD-Card support (yes, MMU using SD instead CD is more fast, so more playable for large NeoGeo roms) and fixes Yamaha timmings:
NEO4ALL can load ISOs from SD-Card too but there are not CDDA tracks for now:
About Dingoo, runs same speed using a bit of overclock.
Okay. Maybe this was a couple months back, but I haven’t loaded up my DC in a while. 
Downloads can be found in the quoted link. Don’t forget to stop by the DCEmulation, or DCEMU, forums to give feedback, or to thank Chui.