First two digits of instruction are op codes shown at the left.
Last three digits are the memory address although only last two are used.
You may change contents of memory and registers directly.
Use Fetch and Execute buttons to step thru program.
Run button will run program but will wait for input
- To enter input after "Run", you must enter info at top right and press enter.
- Press Run again to resume execution.
You can load the sample programs used in class (and available on class web page) by selecting the name in the combo box and then pressing load.