How debug the assembly code from first address memory

To debug the assembly code starting from first address memory, We need to do these steps:

(1) pause the simulator
(2) reset the cpu
(3) enter in debug mode pressing the "d" key..
(4) activate the monitor pressing the "m" key..
(5) press <enter> key as first key
(6) press <enter> or <space> key, to execute an instruction at time. </space></enter></enter>

To advance the debugging for a short time:
press <d> key to momentarily disable the debugger and subsequently press again the button <d>.</d></d>