Thanks a ton for the link, and thanks a ton Garth for the heads-up.
Here's where we are now. I have a working monitor that reads addresses, writes to them, and runs at them. In the example below, I just run at 8000 to restart my monitor. My syntax is a little strange, but it works for me. The video is below.
I plan on later adding in the function to automatically step to the next address if I don't press anything for reading, and same for writing. I will probably just precede that with a space so " FF" would write FF to the next location, just like the assembler on an A2E.
https://scontent.cdninstagram.com/t50.2886-16/18719534_777408762436735_8805198838206824448_n.mp4