nullDC-Naomi SVN r65 is released. nullDC-Naomi is an open source NAOMI Arcade System Emulator. It will NOT run Dreamcast games.

nullDC-Naomi SVN Changelog:
r64
nullAICA:
--Use templates to generate different code for each channel's handler. Fixes the
(huge) branch missprediction problems the sgc code has
yeah, i know, this will inflate compile times by like 2 mins.Thats why it is
only enabled for release configs. Bear with it, makes AICA a few times faster
(literally)

So, test using the profiler, will ya ?
r65
--Oh well, when something is too good its usually not true, right ? read @rev64
for details--

Download: nullDC-Naomi SVN r65
Source:Here