An emulator for Register Machine Our goal is to implement an emulator for a register machine using flex and bison. In the process we will illustrate
a function that assigns numbers to programs, the von Neumann machine, and explain how to write self modifying code. Recall that a register machine has an unlimited number of registers and the following three instructions.
HALT, stops the machine INC r j, increments the contents of register r, and moves to instruction number j.