To ensure you have the correct file for emulation, verify it against these technical markers:

In xemu, the mcpx-1.0.bin file replaces that physical chip’s behavior.

There are two primary legal routes to acquire the mcpx-1.0.bin file. We will detail the most reliable method: dumping from your own console.

A correct dump should have the MD5 checksum: d49c52a4102f6df7bcf8d0617ac475ed . If your file has an MD5 of 96a5f59a13382c185636e691d6c323d , it is a "bad dump" and may cause crashes; you can sometimes fix these using a hex editor. How to Setup xemu with MCPX 1.0

: Xemu's documentation explicitly states you must provide your own dumped BIOS files from hardware you own.