блин, ну неужели нельзя почитать официпальный ридми- там же всё сказано
How to run Sega/Mega CD games
-----------------------------
To play any game, you need BIOS files. These files must be copied to the same
directory as mentioned PicoDrive files. Files can be named as follows:
US: us_scd1_9210.bin us_scd2_9306.bin SegaCDBIOS9303.bin
EU: eu_mcd1_9210.bin eu_mcd2_9303.bin eu_mcd2_9306.bin
JP: jp_mcd1_9112.bin jp_mcd1_9111.bin
these files can also be zipped.
The game must be dumped to ISO/MP3, CUE/CSO/MP3 or CUE/BIN format. When using
CUE/BIN, you must load .cue file from the menu, or else the emu will not find
audio tracks.
CUE/BIN usually takes a lot of space, so it can be converted to cue/cso/mp3 by
using bin_to_cso_mp3 tool, which is included with the emulator. See readme in
the bin_to_cso_mp3/ directory for details.
ISO+mp3 files can be named similarly as for other emus.
Here are some examples:
SonicCD.iso data track
SonicCD_02.mp3 audio track 1 (CD track 2)
SonicCD_03.mp3
...
Sonic the Hedgehog CD (US) - Track 01.iso
Sonic the Hedgehog CD (US) - Track 02.mp3
Sonic the Hedgehog CD (US) - Track 03.mp3
...
In case there is a .cue file with properly specified files names in it,
file naming doesn't matter. Just be sure to load .cue from the menu.
It is very important to have the MP3s encoded at 44kHz sample rate and they
must be stereo, or else they will play too fast/slow or won't play at all.
Be sure NOT to use anything but classic mp3 format (don't use things like
mp3pro).
ISO files can also be .cso compressed or zipped (but not mp3 files, as they
are already compressed). CSO will cause slightly longer loading times, and
is not very good for FMV games. Zipping ISOs is not recommended, as it will
cause very long (several minute) loading times, and make some games
unplayable. File naming is similar as with uncompressed ISOs.
Example:
SonicCD.cso data track
SonicCD_02.mp3 audio track 1 (CD track 2)
SonicCD_03.mp3
...
А если своими словами, то перво-наперво надо скачать биосы, кинуть их в папку самого эмуля, а НЕ ромов и назвать их в СТРОГОМ соответсвии требованиям эмуля.
US: us_scd1_9210.bin
EU: eu_mcd1_9210.bin
JP: jp_mcd1_9112.bin
использовать советую образы iso, mp3+cue ну и собсно запускать. учти что требования при эмуляции Sega CD выше, так что для большинства игр нужны все 333 мгц
