@ Main game loop
NSSVTSSTTSTSN | MARK: 10011010 (wump_loop)
NSTTSTSSSSTN | JSR > 10100001 (print_room_stats)
-A"Move or shoot? (m-s)\n"
+A"Move or shoot? (m/s)\n"
SSSSN | PUSH 0 (number of string substitutions)
NSTTSSSN | JSR > 1000 (printf)
NSTTSTSSSTSN | JSR > 10100010 (move_or_shoot)