On the RS-97 when you add a cd game in bin/cue format and then browse the roms you see the title listed twice but can't see the file extensions. If you select the bin file instead of the cue file and try to load it in the emu, the system locks and you have to reset it with the recessed button on the bottom.
To avoid this, you can set up filters on your emulators. Example: Sega CD
1. Select the PicoDrive icon and hit the select button
2. Select "Edit Picodrive" and hit the A button
3. Move down to "Selector Filter" and hit the A button
4. Enter the following: .zip,.cue,.iso
5. Select OK and hit the A button
6. Hit the Start button to exit editing/return to the menu
Now when you start PicoDrive and the rom selector comes up, only .zip, .cue and .iso files will be listed, eliminating the possibility to accidentally load the bin file and cause a crash. This also hides the audio files for earlier cd-rom releases which had them separate. I have tested over 30 Sega CD titles and all worked well using the 1.2 firmware and the updated version of Picodrive "picodrive_19-03-2018_fixed version of picodrive, fixed double buffer & swapped XY button issue" from the "beta_testing_latest" folder in the RS-97 repo: https://mega.nz/#F!B5xCXZRC!XTt2dsNCeNljYsGW_onUTg
Since Templer the PC Engine/Turbo CD emulator currently doesn't accept zipped roms, I set the filters for Templer to: .pce,.cue,.iso
When you set filters the file extensions are case sensitive. If you set .zip as a filter for example the roms must be named with a .zip extension, not .ZIP (if you have roms named that way, rename them or add .ZIP to the filter list).
Note: You can use a similar procedure to the one above to set the default folder that each emulator's file selector starts in. Instead of choosing "Selector Filter" in step 3, choose "Selector Directory" - browse to where you have the roms stored for that emulator and hit the start button to save the rom path. Then hit the select button to exit back to the menu.
Both Sega CD and PCEngine CD systems require bios files, here are the filenames that the emulators expect and where they should be put on your device:
Sega CD Bios (Use all 3 files): us_scd1_9210.bin, eu_mcd1_9210.bin, jp_mcd1_9112.bin
PCEngine/TurboGraphics CD: syscard3.pce