Me:
int 3
kd> t
mov cx, 1A8h
kd> t
...
VMWare: "A fault has occured causing a virtual CPU to enter the shudown state. If this fault occured outside of a virtual machine, it would have caused the physical machine to restart"
...
https://www.usenix.org/system/files/1311_05-08_mickens.pdf