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.
MORE INFO AND DOWNLOADS AT NEO4ALL SITE