A virtual machine (VM) known as the P-machine (PM/0) that runs p-code. The P-machine is a stack machine with two memory stores: the “stack,” which is organized as a stack and contains the data to be used by the PM/0 CPU, and the “code,” which is organized as a list and contains the instructions for the VM. The PM/0 CPU has four registers to handle the stack and code segments: The registers are named base pointer (BP), stack pointer (SP), program counter (PC) and instruction register (IR). The machine also has a register file (RF) with sixteen (16) registers (0-15). This code also contains a compiler to generate p-code from a Pascal like language source file.