Richard Garriott's D&D #1
Code is property of Richard Garriott. See contest website for conditions of code use. https://www.shroudoftheavatar.com/?p=39149
Original code appears to be a BASIC language dialect for the OS/8 operating system running on a PDP-8. https://www.grc.com/pdp-8/docs/os8_basic_reference.pdf