To run the program, type:

% xeq
Name of object file? simple.o
>>

The >> prompt is the simulator's way of asking for information. You can type any of the simulator's commands here, which are all described in README. If you want to run the program to the end, type xx which means "execute for a long time."

>> xx
Address: 0      LOD    4
Address: 1      ADD    5
Address: 2      STD    6
Address: 3      HLT