It ran user programs on a virtual CPU, also written in Java. Syscalls and page faults would call out to your code, which ran in the same JVM as the virtual CPU

It ran user programs on a virtual CPU, also written in Java. Syscalls and page faults would call out to your code, which ran in the same JVM as the virtual CPU. You can read more about it here: http://www.cs.berkeley.edu/~kubitron/courses/cs162-F05/Nachos/walk/walk.html http://www.cs.berkeley.edu/~kubitron/courses/cs162-F05/Nacho...