Previously I used naomi_boot.bin as BIOS file. After I updated RetroArch and Flycast core to the latest, all NAOMI and Atomiswave converted to NAOMI games can not be loaded anymore. So I placed NAOMI.ZIP as BIOS file. Some games can now be successfully loaded, some still have the following problems.
For Atomiswave converted to NAOMI games in bin/lst format, some SNK games now run like a snail, including Metal Slug 6, KOF XI, KOF NW, etc. Previously Metal Slug 6 is totally OK. Atomiswave games in zip format run normally with the lasts Flycast core.
For NAOMI games, now some games now promote “ERROR 2. THIS GAME IS NOT ACCEPTABLE BY MAIN BOARD”, such as DOA2 Millennium and Street Fighter Alpha 3 Upper. Previously these games run totally fine with naomi_boot.bin alone.
Even I installed the old Flycast 0.1 8193d58 core back, I still sense performance regression. I remember previously DOA2 Millennium can run in full speed on my Qualcomm 821 phone, now it often lags on the same phone.
Hope these issues can be fixed soon. Thank you very much.