Building a CPU on an FPGA, part 2

Building a CPU on an FPGA that can play Zork.

The Z-Machine specification:
http://inform-fiction.org/zmachine/standards/z1point1/index.html

Oracle VM Virtual Box:
https://www.virtualbox.org/

Ubuntu Linux:
https://www.ubuntu.com/download/desktop

Sublime Text 3:
https://www.sublimetext.com/3

Package Control for Sublime Text:
https://packagecontrol.io/installation

Verilator:
http://www.veripool.org/wiki/verilator

Source code for this video:
https://github.com/RobertBaruch/plugh-1/tree/1.1