OK, so I was experimenting with the GUI library in DCS7 and I [ON] break'd my program and started editing after I pressed Goto. So after I closed the DCS program editor, I was returned to the home screen with a frozen black cursor at (1,1). So I pulled the battery thinking I'm so smart (knowing it wasn't a link port issue) because ram won't be cleared when you battery pull on the home screen. I was wrong in doing this. I put the battery back in and pressed ON. Now instead of a cursor, I get a blank screen aside from a single lowercase "a" in graph screen font. Nothing happens if I do anything. Except for the ON button, which draws a 1x7px black line 1px to the right of it. Then I realized this "a" isn't a graph screen font "a". Graph font a's are
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but this "a" is

Code:

So, this must be the 5x7px character for alpha lowercase, but inverted.
I can't clear my ram or anything.

Update: using a link port interrupt, was able to enter the memory menu, although the title is drawn glitchy.

Update 2: fixed but looking for answers