If "xemu" refers to the emulator suite by lgblgblgb (emulating Commodore LCD, VIC-20, etc.):
: For expert users, an EPROM editor can be used to modify settings like 480p output or true widescreen directly in the BIOS environment. flash rom xemu
Flash ROM refers to the required for the Xemu emulator to boot into the console's operating environment and play games. Because the original retail BIOS contains DRM restrictions that Xemu cannot currently bypass, you must use a modified or debug version to run unsigned software. Core Requirements for Flash ROM If "xemu" refers to the emulator suite by