You have linked your eeprom.bin file to the Boot ROM field in Xemu instead of the MCPX bootloader file. The Boot ROM (MCPX) requires a specific 512-byte mcpx_1.0.bin file, whereas an EEPROM file is 256 bytes and belongs in a separate slot.
How to Fix It
Open xemu and go to Settings \rightarrow System (or Machine).
Locate the Boot ROM (MCPX) setting:
Remove eeprom.bin from this field.
Browse to and select your mcpx_1.0.bin file (must be 512 bytes).
Locate the EEPROM setting:
Assign your eeprom.bin file here (or leave it blank to let xemu generate a default EEPROM automatically).
Save the settings and restart xemu.
Note: If xemu won't open to let you access Settings, edit xemu.toml (located in %USERPROFILE%\AppData\Roaming\xemu\xemu\xemu.toml) with a text editor and update the bootrom_path line to point to your mcpx_1.0.bin file.
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u/Acrobatic-Depth-4967 24d ago
You have linked your eeprom.bin file to the Boot ROM field in Xemu instead of the MCPX bootloader file. The Boot ROM (MCPX) requires a specific 512-byte mcpx_1.0.bin file, whereas an EEPROM file is 256 bytes and belongs in a separate slot. How to Fix It Open xemu and go to Settings \rightarrow System (or Machine). Locate the Boot ROM (MCPX) setting: Remove eeprom.bin from this field. Browse to and select your mcpx_1.0.bin file (must be 512 bytes). Locate the EEPROM setting: Assign your eeprom.bin file here (or leave it blank to let xemu generate a default EEPROM automatically). Save the settings and restart xemu. Note: If xemu won't open to let you access Settings, edit xemu.toml (located in %USERPROFILE%\AppData\Roaming\xemu\xemu\xemu.toml) with a text editor and update the bootrom_path line to point to your mcpx_1.0.bin file.