DEmul expects BIOS files to be zipped together in a file named dc.zip within your designated ROMs folder.
Open DEmul and navigate to . Ensure the "Roms Paths" section points specifically to the folder where your dc.zip is located. Click OK and then try to Run Dreamcast again. Common Comparison: DEmul vs. NullDC demul mpr- 21931. ic501
Create a folder named inside your main DEmul directory. Place your BIOS files inside a zip archive named dc.zip . Put that dc.zip directly into your ROMs folder. 3. Update Emulator Paths DEmul expects BIOS files to be zipped together
The emulator might be looking in the wrong directory for your BIOS files. How to Fix the Error demul mpr- 21931. ic501